Eco-friendly LEGO alternatives do exist! While LEGO has a near-monopoly on modular building systems, a growing number of plastic-free LEGO alternatives are proving that you don’t need ABS plastic to build something amazing. I found, bought, and built 7 sets of eco bricks from toy brands. Think bamboo LEGO swaps and wooden bricks. Take it from someone who has been building and collecting LEGO for over 14 years. Sure, biodegradable LEGOs might not match the Danish brand’s variety (yet), but these bricks are non-toxic, sustainable, and VERY fun!
For more creative options, check out these environmental board games for kids.
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Best Eco-Friendly LEGO Alternatives, at a Glance
- Qutumill (Overall best eco-friendly LEGO alternative)
- Tegu (Best plastic-free LEGO alternative for 1 year old+)
- Woodbox (Most similar to LEGO bricks)
- KEVA (Most sustainable LEGO alternative for older kids)
- Eco Bricks (Best bamboo LEGO swap)
- Jovi-mindly＆Notchies (Best set for 50+ designs)
“I know what you’re thinking: ‘There are thousands of plastic toy brands — why focus on LEGO sets specifically?’” LEGO manufactures over 90,000 metric tons of plastic annually. So, the Danish company is the largest toy manufacturer in the world by sales. LEGO’s revenue increased by 13% in 2024 to 74.3 bln Danish crowns. Even with new materials in the mix, the majority of bricks in circulation today—and in the foreseeable future—are still made of non-renewable, non-biodegradable plastics.
If you’re anything like me, you know the thrill of snapping together the perfect LEGO set. As someone who has loved LEGO for over 14 years, I don’t say this lightly: I’m actively trying to quit this unsustainable hobby. Building LEGO sets has brought me endless joy and creativity, but I can’t ignore the environmental cost of supporting a product still rooted in petroleum-based plastics.
Thankfully, there are plenty of eco-friendly LEGO alternatives out there that come impressively close to replicating the LEGO experience. While these plastic-free LEGO bricks may not match LEGO’s scale in design variety just yet, many LEGO alternative brands are gaining momentum.
Wooden building bricks are my very first choice because they are made from renewable materials like beech, maple, or bamboo. Unlike plastic, they don’t rely on fossil fuels or release microplastics into the environment over time. Many sustainable LEGO alternatives use natural finishes, water-based paints, or no coatings at all, making them a safer option for young children who often mouth their toys. Parents can also avoid exposure to harmful chemicals like phthalates, BPA, or synthetic dyes commonly found in conventional toys. Plus, studies have demonstrated that this can help reduce blood pressure, stress, and anxiety.
How Eco-Friendly is LEGO?
LEGO bricks aren’t eco-friendly. Traditional LEGO bricks are made from acrylonitrile butadiene styrene (ABS), a tough, petroleum-based plastic. This means every LEGO brick starts its life with oil drilling and refining. The process releases greenhouse gases, contributes to air and water pollution, and fuels the climate crisis. The production of just 1 kg of ABS emits up to 3.8 kg of CO₂ equivalents, according to the PlasticsEurope eco-profile report.
The environmental cost doesn’t stop after manufacturing. ABS is non-biodegradable and highly resistant to environmental breakdown. A 2020 study from the University of Plymouth found that LEGO bricks can survive in marine environments for 100 to 1,300 years, depending on exposure.
During that time, these bricks may leach toxic chemicals or break into microplastics. These are small enough to be ingested by fish, seabirds, and eventually humans. For reference, microplastics have already been found in 98.9% of seafood samples tested, and new studies suggest they’ve entered our food chain, soil, drinking water, and even human blood.
That means the bricks your kids play with today might still be polluting the planet well into the next millennium. So, many families, just like us, are actively looking for eco-friendly LEGO alternatives. Whether you want plastic-free LEGO alternatives, biodegradable LEGO, or simply LEGO alternatives for kids made from safer materials, the good news is that options exist.
Is LEGO Plastic Safe?
Most LEGO bricks are made from ABS (acrylonitrile butadiene styrene), a strong, impact-resistant plastic. According to LEGO, ABS is BPA-free, phthalate-free, and does not contain PVC, which are all good signs for safety. LEGO conducts rigorous testing to meet global toy safety standards, including:
- EN71 (EU)
- ASTM F963 (USA)
- ISO 8124 (International)
These standards require tests for flammability, mechanical hazards, and chemical migration to ensure children aren’t exposed to unsafe levels of heavy metals or toxic compounds.
So, in terms of regulatory compliance, LEGO plastic is “safe.” That’s one of the main reasons why I decided to start looking for eco-friendly LEGO alternatives last year.
But “Safe” Isn’t the Same as “Non-Toxic”
Just because LEGO meets regulatory limits doesn’t mean it’s 100% free from concern, especially if you’re striving for a plastic-free or low-tox lifestyle. Here’s why:
- ABS is a petroleum-based plastic, and while it’s stable in finished form, the manufacturing process involves potentially harmful monomers like styrene and acrylonitrile. Long-term exposure to these substances — especially during production or disposal — poses health risks, including respiratory irritation and possible carcinogenic effects (IARC, 2021).
- ABS can release microplastics over time as bricks wear down. While these particles are small, emerging research shows they can carry chemical additives and potentially leach into water or digestive systems if ingested, particularly by toddlers who mouth their toys.
- A 2024 study found that even BPA-free plastics can release estrogenic compounds under heat or wear. While LEGO doesn’t contain BPA, this raises larger questions about the chemical safety of all synthetic polymers, especially over long-term use.
Is LEGO Going To Stop Using Plastic?
No, LEGO will most likely continue to use plastic for a long time. LEGO has made public commitments to sustainability, promising to develop sustainable LEGO bricks from non-fossil sources by 2032. They’ve invested over $400 million in sustainability initiatives. In 2021, LEGO shared a prototype brick made from recycled PET plastic sourced from discarded water bottles. But by 2023, LEGO scrapped the project, admitting the new bricks had a higher carbon footprint than traditional ABS due to extra processing steps and energy usage.
To their credit, LEGO has launched several material innovations aimed at reducing reliance on virgin plastic. These include:
- rSEBS: LEGO now makes some of its tires using old fishing nets and recycled engine oil. These parts contain at least 30% recycled content and appear in over 120 LEGO sets.
- Bio-PE: Since 2018, flexible parts like trees, leaves, and accessories have been made from bio-polyethylene derived from sugarcane. Around half of LEGO sets now include at least one bio-PE piece.
- arMABS: In 2024, LEGO began using recycled artificial marble countertops to make transparent pieces. This material now appears in 85% of sets, including lightsabers and windscreens.
- ePOM: Starting in 2025, LEGO plans to manufacture rigid elements like axles using CO₂-derived e-methanol—an experimental approach combining bio-waste and renewable energy.
So while LEGO is working toward greener goals, the reality is this: LEGO blocks are not biodegradable and therefore are not sustainable.
But Are Recycled LEGO Bricks Non-Toxic?
LEGO’s newer materials — like rSEBS (made from recycled engine oil and fishing nets) and arMABS (using countertop waste) — sound eco-forward, but they raise questions. How are these materials processed? Do they introduce chemical contaminants from their previous uses? LEGO says no, and they test thoroughly. But independent studies on these newer compounds are limited or have not yet been published.
So while sustainable LEGO alternatives for kids made by LEGO itself are tested and technically safe, they still involve industrial plastics, which many conscious consumers choose to avoid entirely.
What About LEGO Plastic-Free Packaging?
One thing that really stood out to me was that some of my LEGO sets came in plastic packaging while other sets were wrapped in paper. This is because, in 2021, LEGO announced plans to phase out single-use plastic bags inside boxes and replace them with recyclable, sustainably sourced paper bags.
The rollout started with test markets and select sets and is expected to fully transition by 2025. According to LEGO Group’s 2022 Sustainability Report, around 20% of all sets shipped that year included the new paper packaging, so it’s still a work in progress. The new paper bags are FSC-certified, recyclable, and designed to tear open easily without scissors, much like the experience of unboxing traditional plastic LEGO bags. The company still plans to complete the switch globally by 2025, but until then, LEGO packaging remains a mix of recyclable cardboard and fossil-based plastic.
Still, paper packaging doesn’t automatically mean eco-friendly Lego bricks. We still have a long way ahead of us for that to happen. So, till then, let’s invest in some amazing sustainable LEGO alternatives.
8 Plastic-Free & Eco-Friendly LEGO Alternatives in 2025
1. Tegu Wooden Block Set
- Plastic-free Materials: Natural wood with water-based finishes
- Age Range: 1 years old +
- Feature: Magnetic eco bricks, fully compatible with all other Tegu magnetic wooden sets, ethically made in Tegucigalpa
Tegu is one of the most sustainable LEGO alternatives for kids and adults. We currently have 3 sets: the dinosaurs, zip zap, and the Daredevil. The magnetic wooden building system that encourages open-ended, screen-free play for kids of all ages, even toddlers. These eco bricks are all from natural wood with non-toxic, water-based finishes and no plastic. The hidden magnets add a clever twist, allowing for gravity-defying structures like towers, trains, and animal homes. Not every side is magnetic, which challenges kids to think creatively as they build. It’s fully compatible with other Tegu magnetic sets, so you can easily expand your collection.
2. Woodbox Building Blocks
- Plastic-free Materials: Biodegradable LEGO alternative with black walnut, ash tree, oak, cherry, and white maple
- Age Range: 3 years old +
- Feature: Handmade without any chemical coloring or varnishing, compatible with all LEGO bricks
I am not sure why this handmade wooden building set doesn’t have 1.000 glowing reviews by now. It’s crafted from five types of natural wood — including cherry, oak, and black walnut with no chemical finishes or synthetic additives. It also comes with a lifetime guarantee, which isn’t very common, for sure. Each piece has a smooth, gap-free finish that feels premium and fits together effortlessly. The blocks are completely organic, non-toxic, and safe for even the youngest builders, with the added charm of real wood’s natural aroma. What makes it even more impressive is the brand’s closed-loop sustainability: for every tree used, another is planted in the Carpathian Mountains. These blocks even integrate with LEGO, offering a unique plastic-free LEGO alternative that blends nature with creative play.
3. Cubika Wooden Blocks Construction Kit
- Plastic-free Materials: European beech wood eco bricks with water-based paint
- Age Range: 2 years old +
- Feature: Sustainably sourced wood from Europe, Montessori-Inspired
For under $40, this 100-piece eco-friendly LEGO bricks alternative set offers incredible value for eco-conscious families. Cubika uses sustainably sourced European beech wood and is finished with non-toxic, water-based paint, It’s safe, sturdy, and beautifully crafted. Designed for toddlers 18 months and up, it’s a Montessori-inspired toy that encourages hands-on learning through building, stacking, and problem-solving. The variety of shapes and colors helps develop fine motor skills, spatial reasoning, and creativity, all while keeping screen time at bay. It’s perfect for both solo play and collaborative fun, making it a hit with siblings and caregivers alike. The smooth finish and durable design ensure it holds up to everyday use without splintering or fading.
4. Qutumill Montessori Wooden Building Blocks
- Plastic-free Materials: Sanded hardwood
- Age Range: 3 years old +
- Feature: Montessori bricks that make dozens of combinations
The Little Architect set packs a serious creative punch with 300 wooden building blocks and a sturdy baseplate for endless designs — from animals and vehicles to letters and mazes. These biodegradable bricks are entirely made of smooth-sanded natural hardwood. If you like complex LEGO builds, this one is a great choice for developing spatial awareness, logic, and hand-eye coordination, with multiple gameplay options that grow with your child. The included carry bag makes cleanup and storage simple, and the base helps keep structures aligned while building. The blue peg connectors add versatility but can come loose, posing a potential choking risk for younger kids — best for ages 6 and up. That said, older kids will love the open-ended creativity and challenge this set offers.
5. KEVA Structures
- Plastic-free Materials: Biodegradable bricks made of wood and no glue
- Age Range: 5 years old +
- Feature: Compatible with most KEVA sets
KEVA Pine Planks are precision-cut wooden blocks that stack effortlessly without glue or connectors, relying purely on gravity and imagination. With 200 identical planks, kids can build everything from towering structures to mind-bending cantilevers — all while learning real-world concepts like balance, geometry, and physics. We built a rather big train last week, complete with 3 wagons, and are now thinking of coloring it. The eco-friendly LEGO alternative set includes a full-color idea booklet, perfect for sparking creativity and teaching through play. These blocks have a natural wood scent, satisfying sound, and just the right texture for confident stacking. They’re fully interchangeable with Kapla planks, making them a versatile addition to any building toy collection.
6. Eco Bricks Bamboo LEGO Alternative
- Plastic-free Materials: Precision-carved natural bamboo
- Age Range: 3 years+
- Feature: Endless combinations and antimicrobial properties
Eco Bricks is hands down one of the best eco-friendly LEGO alternatives for kids, with 145 biodegradable bamboo bricks that are both durable and beautifully crafted. These natural bricks interlock with major brands, so you don’t have to abandon your current collection to start building sustainably. The company uses fast-growing bamboo, they’re a plastic-free LEGO alternative that helps reduce your environmental footprint without compromising on creativity. The set also includes felt stickers made from recycled plastic bottles, adding a fun, tactile element while supporting upcycled materials. The smooth finish and satisfying texture of the bamboo elevate the sensory experience beyond traditional plastic bricks.
7. Jovi-mindly＆Notchies Eco Bricks Set
- Plastic-free Materials: FSC Certified wood
- Age Range: 4 years old +
- Feature: Can create over 50 different designs, create over 50 different designs inspired by traditional Chinese architecture
If you are looking for a Plastic-free LEGO alternative that will give you hours and hours of play time, this Jovi-mindly＆Notchies eco bricks set is a perfect option. The set came complete with 96 eco-friendly, non-toxic pieces designed to spark creativity and teach essential building skills. Kids can follow illustrated guides to build over 50 designs — from playgrounds to campers — or invent their own “dream homes” through open-ended play. Inspired by traditional Chinese architectural techniques, the mortise-and-tenon structure offers easy assembly and solid durability without glue or harmful chemicals. As children plan and build, they naturally develop critical thinking, problem-solving, and spatial reasoning — all while having fun. Each piece is smooth, safe, and perfectly sized for small hands, with a handy storage bag included for cleanup.
8. GiGi Bloks XL Cardboard Blocks
- Plastic-free Materials: Cardboard
- Age Range: 3 years old +
- Feature: Great for hand-eye coordination and collaborative play
Granted, this set isn’t exactly a basic sustainable LEGO bricks alternative, but I couldn’t keep it to myself. GiGi Bloks offers a fresh, oversized twist on building play with 96 jumbo cardboard blocks designed for constructing dens, forts, and castles big enough to sit in. Made from 100% recyclable cardboard, these blocks are a creative swap that’s both durable and surprisingly strong, supporting up to 53 lbs thanks to a clever interlocking system. Unlike foam or plastic bricks, GiGi Bloks combine eco-conscious design with hands-on imaginative play. The lightweight yet sturdy material makes it safe for kids to build big without the fear of toppling structures. While not suitable for toddlers under 3, it’s perfect for older kids who want to construct life-sized spaces to play in.
FAQs About Sustainable LEGO Bricks
Yes, traditional LEGO bricks are made from ABS plastic, a petroleum-based material that is not biodegradable and contributes to plastic pollution. While LEGO is making strides toward sustainability, the majority of its products still rely on fossil fuels and generate long-term environmental waste.
No, LEGO bricks are not biodegradable. Studies suggest they can take up to 1,300 years to break down in marine environments, making them a persistent pollutant if not properly disposed of.
Modern LEGO bricks are considered non-toxic and comply with global toy safety standards. However, while LEGO is free of phthalates and bisphenol A (BPA), they still contain Styrene, a classified as a possible human carcinogen by the International Agency for Research on Cancer (IARC). Butadiene is a known human carcinogen, linked to an increased risk of leukemia, and Acrylonitrile is toxic if inhaled or ingested in large quantities and is classified as a probable human carcinogen.
For more plastic-free kids’ products, check out the:
- Non-toxic beach toys
- Non-toxic baby floor mats
- Clean chapstick
- Non-toxic kids’ water bottles
- Non-toxic baby pacifiers
- Safest baby lotions
- Toxic-free nail polish for kids
Final Thoughts On the Best Eco-Friendly LEGO Alternatives Free of Plastic
These were my favorite plastic-free LEGO alternatives in 2025. Traditional LEGO bricks are made from ABS plastic—a petroleum-based material that is incredibly durable but non-biodegradable and environmentally harmful to produce. While LEGO has introduced some partially sustainable elements, like bio-PE plants and recycled content in tires, the core bricks remain plastic, with most sets still arriving in plastic packaging. In contrast, wood is a renewable, biodegradable, and non-toxic material that makes an excellent alternative for building blocks. Many eco-friendly LEGO alternatives made from wood use no harsh chemicals, rely on eco-friendly manufacturing, and even come from brands committed to reforestation. Wooden bricks offer the same open-ended, creative play while reducing your plastic footprint and avoiding harmful additives.
Konstantina Antoniadou is an expert sustainability writer, certified in Chemicals and Health by Johns Hopkins University, where she focused on the toxicity of commonly found household chemicals and their health impacts. She has also completed specialized studies in Sustainable Fashion (Copenhagen Business School), Business Models for Sustainability (BMS), and Sustainable Development Goals (University of Copenhagen), deepening her expertise in the connection between personal choices and global environmental change. With years of experience as a senior writer and researcher, Konstantina now leads our reviews of non-toxic home products, beauty and skincare brands, and sustainable fashion. K. is also the creator of the popular 7-Day Non-Toxic Living Challenge, downloaded over 2,000 times and praised for its accessible, science-backed tips.
