Crazee Cube is a toy made from 3D polyominoes, similar to Blokus 3D. Only here you have to fit all the pieces back into the box. Good luck.

There are 20,000 ways to do it. And a whole lot more ways not to do it.

It’s not hard to turn this toy into a game: players take turns placing a piece into the box. The one who can’t place a piece without leaving it sticking out of the box loses. Kind of a 3D version of Batik.