Polydron Platonic Solids Set

The five Platonic solids are the shapes that underpin nearly all solid geometry — and there's a real difference between being shown one and holding one you built yourself.

This 50-piece set makes all five: tetrahedron, cube, octahedron, dodecahedron, icosahedron. Your child folds flat pieces up into a solid and feels the form close in their hands.

Suitable from age 4, though it stays interesting a lot longer than that.