What's inside
As an Amazon Associate I earn from qualifying purchases. This post may contain affiliate links at no extra cost to you.
A stackable toy bin is useful only if it stays put, carries comfortably, and has no sharp edges where small hands reach. This design uses 1/2-inch plywood, solid-wood corner cleats, and finger slots cut into the end panels. Each finished bin is about 16 inches wide, 12 inches deep, and 8 inches tall. Build two or more to stack them; the cleats on each bin locate the one above it.
Contents
Design and safety
The open-top bin is sized for blocks, cars, and soft toys—not heavy books or a child to climb on. The shallow stacking cleats help prevent sliding, but this is not a locking joint. Put heavier bins on the bottom, stack no more than three high, and keep the stack away from furniture a child could use to climb. Round over or sand every edge, especially the finger slots.
These dimensions make a bin with a 16-by-12-inch footprint. The actual inside space is slightly smaller because of the 1/2-inch sides and ends. For a room with a specific shelf, measure its opening first and adjust the panel sizes; leave at least 1/4 inch of clearance.
Materials and tools
For one bin, use one 2-by-4-foot sheet of 1/2-inch plywood, plus a straight-grained hardwood or softwood board for the cleats. Avoid MDF and particleboard: screw edges are weak, and either material can break down if the bin gets wet. Cabinet-grade birch plywood gives a clean finish, but sanded construction plywood is a cheaper, acceptable choice if you inspect it for voids and splinters.
You’ll also need wood glue, 1-inch screws, and a finish suitable for objects handled by children. A water-based clear wood finish is a practical option; follow its label for curing time before putting toys back in the bin.
Gather a tape measure, square, pencil, drill/driver, clamps, and a saw that can make straight cuts. A jigsaw is enough for the slots, though a template and router make repeated slots more consistent. For smoother, more predictable results, a router bit and slot template can help; for a single bin, careful jigsaw work is fine.
Cut list
| Part | Quantity | Finished size |
|---|---|---|
| Bottom | 1 | 16 × 12 inches |
| Long sides | 2 | 16 × 8 inches |
| End panels | 2 | 11 × 8 inches |
| Stacking cleats | 4 | 11 × 3/4 × 3/4 inches |
The end panels fit between the long sides, while the bottom sits inside the assembled walls. This gives a finished outside width of 16 inches and depth of 12 inches. The cleats attach underneath the bottom, inset about 1/2 inch from each edge. They form shallow locating rails for the bin above.
Cut the finger slots
On each end panel, mark a horizontal slot 4 inches long and 1 inch high. Center it side to side, with its lower edge 2 inches above the bottom. That leaves enough material below the opening for a sturdy handhold. Drill a 1/2-inch starter hole just inside each rounded end, then cut between the holes with a jigsaw. Keep the corners rounded rather than square; square inside corners concentrate stress and are harder to sand smooth.
Clamp the panel securely and keep the saw shoe flat. Don’t force the blade around the curves. If the slot edges splinter, slow down and use a fine-tooth blade; painter’s tape over the cut line can also help. Sand the opening until a fingertip dragged around the full edge finds no snag. A fine-grit sanding sponge is handy for smoothing the curved ends.
Assemble the bin
Dry-fit the panels around the bottom before using glue. Check that the corners meet squarely and the bottom edges sit flush. Apply a thin bead of wood glue to the panel edges that contact the bottom and to the end-panel joints. Clamp the box, recheck both diagonal measurements, and adjust until they match. Drill pilot holes to reduce the chance of splitting the plywood, then drive 1-inch screws through the walls into the bottom and through the long sides into the end-panel edges. Keep screws at least 3/8 inch from plywood edges.
Wipe away squeezed-out glue before it hardens. Let the assembly dry according to the glue label, then inspect for proud screw heads, gaps, or sharp plywood veneer. Fill small cosmetic gaps if desired, but don’t use filler to disguise a loose joint. Sand the outside and all top edges, easing corners with a few passes of sandpaper or a block plane if you already own one.
Add stacking cleats and finish
Turn the bin upside down. Position one cleat beneath each long edge, running front to back, and set each about 1/2 inch in from the outside edge. The cleats should be parallel and aligned; a crooked pair can make the next bin rock. Glue and screw them to the bottom with pilot holes. Use screws short enough that they cannot break through the bin floor—1-inch screws are generally suitable for 3/4-inch cleats and 1/2-inch plywood, but check the actual thickness of your parts before driving them.
Test the fit by setting a second bin on top, with its cleats resting around the lower bin’s top edges. The upper bin should sit flat without binding. If it catches, adjust the cleat position before the glue cures. Sand again, remove dust, and apply the finish in thin coats. Let it cure fully—not just dry to the touch—before loading toys. Recheck screws and finish periodically; stop using the bin if a panel cracks or a cleat loosens.