For Chemistry geeks who play Backgammon (an admittedly small demographic, I know): a Doubling Cube that has been obfuscated by using Periodic Table Elements instead of numbers: - 2 - He
- 4 - Be
- 8 - O
- 16 - S
- 32 - Ge
- 64 - Gd
This version is hollowed out. A solid version is available here:
Elemental Doubling Cube