Last year, I spent three weekends sanding and painting a wooden train set for my 3-year-old nephew, only to have my sister hand it back to me a week later with a grimace. "The wood is pressure-treated," she said, tapping the faded green stamp on the underside of the board I'd grabbed from the off-cuts pile at the local hardware store. "And that paint you used has VOCs. He puts everything in his mouth, remember?" I'd gone into the project thinking any wooden toy was automatically better for the planet (and my nephew) than the cheap plastic cars he was chewing through in a month, but I'd missed the mark entirely. That mistake pushed me to spend six months testing different sustainable, non-toxic materials for wooden toy making, and I've learned the hard way that "sustainable" is a lot more nuanced than just grabbing the first piece of wood you find at the craft store.
The good news? You don't need a fancy workshop, expensive imported lumber, or a degree in forestry to make safe, eco-friendly wooden toys that will last for years (or even generations). Below are the best sustainable materials to use, ranked by accessibility, safety, and environmental impact, plus tips to avoid the most common pitfalls.
Reclaimed Wood: The Gold Standard of Low-Waste Toy Making
Reclaimed wood is my go-to for every toy project, for one simple reason: it gives old, otherwise discarded material a new life, no new trees cut down. The trick is knowing which types are safe for kids' toys, and how to prep them properly.
- Reclaimed barn or farm wood : Pieces pulled from deconstructed 19th and early 20th century barns are often made of old-growth oak, pine, or chestnut, which is far more durable than new-growth lumber. The only catch? Older barn wood was often painted with lead-based paint before 1978, so always test any painted pieces with a $10 lead test kit before sanding. If it's lead-free, it's perfect for large building blocks, dollhouse furniture, or toy workbenches. I made a set of oversized building blocks for my niece last year from reclaimed barn oak, and the faint scratch marks and old nail holes from the barn's days as a horse stable have become her favorite "secret features" to point out to visitors.
- Heat-treated (HT) pallet wood : Pallets are free, widely available, and already milled into uniform sizes, making them perfect for beginner projects. The only pallets you should ever use are marked with an "HT" stamp, meaning they were heat-treated to kill pests, not treated with toxic methyl bromide (marked "MB"). Avoid pallets with unknown stains, or those used to transport chemicals, even if they're heat-treated. Pallet wood is ideal for small toy cars, puzzle pieces, stacking rings, and even simple dollhouse frames. I've made three sets of toy fruit for my niece's play kitchen entirely from free pallet off-cuts, and they've held up to two years of rough play so far.
- Reclaimed hardwood from old furniture : If you have an old broken dining table, dresser, or bookshelf made of oak, maple, cherry, or walnut, don't throw it out. These hardwoods are already fully cured (so they won't warp or shrink as much as new wood) and far more durable than soft pine. I made a set of heirloom building blocks for my nephew out of the oak from my grandma's 1970s dining table, the same table she ate at every Sunday for 40 years. Every block has a tiny faint scratch from when my cousin dropped a crayon on it in 1998, and my nephew now calls them "grandma's magic blocks." You can often pick up old hardwood furniture for free on curbside, or for $5-$10 at thrift stores, making this one of the most affordable sustainable options out there.
FSC-Certified New Wood: A Responsible Backup When Reclaimed Isn't Available
If you can't find the right reclaimed wood for your project, look for lumber certified by the Forest Stewardship Council (FSC), which means it was harvested from responsibly managed forests that prioritize biodiversity, worker rights, and long-term forest health, not clear-cutting old-growth land. Avoid any wood labeled "sustainably harvested" without third-party FSC certification---that label is unregulated and often just greenwashing.
- Hard maple : The gold standard for kids' toys, hard maple is extremely dent-resistant, non-porous (so it doesn't hold onto bacteria or stains), and smooths out to a silky finish with minimal sanding. It's perfect for teething toys, stacking rings, building blocks, and any toy that will see a lot of rough play or end up in a toddler's mouth. FSC-certified hard maple is widely available at most local lumber yards for a small premium over untreated pine.
- Beech : Slightly softer than maple but still extremely durable, beech holds carved detail far better than most other woods, making it ideal for wooden puzzles, toy animals, dollhouse furniture, and toy cars. It's also naturally resistant to moisture, so it won't warp if it gets left out in the rain or dropped in a bathtub.
- Formaldehyde-free FSC-certified birch plywood : Most cheap plywood is held together with formaldehyde-based glue, which off-gasses toxic fumes for years, but formaldehyde-free FSC-certified birch plywood is completely non-toxic and extremely stable (it barely warps or shrinks, even with changes in humidity). It's perfect for flat-pack toy projects, dollhouse walls, puzzle bases, and even simple toy musical instruments like xylophones. Just make sure to seal all the edges with a non-toxic finish to avoid splinters.
Upcycled Household Wood Scraps: The Most Accessible Sustainable Option for Beginners
If you're new to woodworking and don't want to invest in lumber yet, look no further than the scrap pile in your own home (or your neighbor's). Old wooden cutting boards that are too worn for food, broken wooden serving trays, old wooden spoons, even discarded wooden picture frames can all be cut up and repurposed into small toys. I once made a set of 12 toy fruit pieces for my niece's play kitchen out of a cracked old wooden serving tray my mom was throwing out, and the faint water stain on the "watermelon" slice is now my niece's favorite detail to point out. This option is 100% free, produces zero waste, and lets you add a little personal family history to the toys you make.
Non-Toxic, Sustainable Finishes: The Make-or-Break Step Most Crafters Skip
You can use the most responsibly sourced, reclaimed wood in the world, but if you finish it with solvent-based polyurethane, lead-based paint, or toxic varnish, the toy isn't safe for kids or the planet. Stick to these low-waste, non-toxic finish options, all of which are food-safe and long-lasting:
- Pure tung oil : Made from the nut of the tung tree, tung oil is a plant-based, zero-VOC finish that penetrates deep into the wood rather than sitting on top, so it won't peel or chip over time. It's water-resistant and easy to reapply, making it perfect for teething toys, bath toys, and any toy that will see a lot of wear. Just make sure to buy 100% pure tung oil, not "tung oil finish" which is often mixed with solvents and VOCs.
- Beeswax and mineral oil blend : This is my favorite finish for small toys, building blocks, and teethers. It's super easy to apply (just rub it on with a cloth, no fancy tools needed), food-safe, non-toxic, and gives wood a soft, warm glow. It needs to be reapplied every 3-6 months for toys that get heavy use, but it's completely safe even if a kid chews through it.
- Zero-VOC water-based polyurethane : If you're making high-wear toys like train sets, toy cars, or dollhouses that need a more durable, scratch-resistant finish, opt for a zero-VOC, formaldehyde-free water-based polyurethane. It dries quickly, is non-toxic once cured, and holds up to years of rough play. Just avoid any solvent-based polyurethane, which off-gasses VOCs for months after application.
Materials to Avoid at All Costs
Even if you're on a budget, skip these materials entirely---they're either toxic for kids or harmful to the environment:
- Pressure-treated wood : The green or brown tinted wood sold for garden beds is treated with arsenic, copper, and other toxic chemicals that leach into skin and are extremely dangerous if ingested. Never use pressure-treated wood for any toy a child might touch or put in their mouth.
- Wood with unknown lead-based paint : Any painted wood made before 1978 could contain lead paint. If you're unsure, test it with a lead test kit before sanding, and never sand lead-painted wood without a NIOSH-approved respirator and proper protective gear.
- Cheap MDF or plywood with formaldehyde glue : Most low-cost MDF and plywood is held together with formaldehyde-based glue that off-gasses toxic fumes for years, even after you seal it. Stick to FSC-certified, formaldehyde-free options only.
- Solvent-based finishes or paints : Avoid any finish, stain, or paint that contains VOCs, lead, or formaldehyde. Even small amounts of these chemicals can be harmful to kids' developing immune systems, and they release toxic fumes into your home while you're working on your project.
Try This Beginner-Friendly Sustainable Toy Project This Weekend
If you're new to wooden toy making and don't know where to start, make a simple set of stacking blocks using free heat-treated pallet wood. All you need is a handsaw, sandpaper, and a beeswax and mineral oil blend to finish them. Cut the pallet wood into uniform 2-inch cubes, sand the edges smooth to avoid splinters, rub on the beeswax blend, and you have a set of heirloom-quality stacking blocks that will last for years. No fancy tools, no expensive lumber, and zero waste.
When I handed my nephew the oak train set I made last month from reclaimed barn wood, finished with pure tung oil, he chewed on the wheels for 10 minutes before running off to play with the rest of it. My sister texted me a photo of it sitting on his shelf next to his old plastic train set, which had already broken three times, and said, "This one's going to be around when he's grown." That's the whole point of sustainable wooden toy making: you're not just making a toy that's better for the planet right now, you're making something that will be passed down, played with, and loved for years, instead of ending up in a landfill after a few months of play. Grab a piece of old scrap wood, a little sandpaper, and the story you want to tell---your first sustainable toy is just a few hours away.