Unemployed Philosopher's Guild
If you've ever wanted a constant, 2D reminder of what the five Platonic Solids are, you are finally in luck. Enter the Platonic Solids pins. Marvel over the five shapes where every angle and every side is equal: Tetrahedron, Cube, Octahedron, Dodecahedron, and Icosahedron.
That's a thing you know now.