Puzzle Cube

This is a cube I designed many years ago. It's quick and relatively simple to fold, and it only uses the creases that already exist in the 8x8 pleated sheet. I call it the "puzzle cube" because if someone hasn't seen how it's folded, it's a real challenge to figure out how to unfold it; so, you can fold it with a coin inside, and challenge someone to disassemble it and extract the coin without damaging the paper.