[EricH]

Originally Posted by Fe_Will

Or maybe game pieces filled with water? Imagine a sealed container 1/2 filled with water that is the game piece. That would present some interesting challenges.

Who said anything about it only being half full? It might be 1/4 or 3/4, and you don't know how full it really is... (This idea has already been presented, so it's not my fault if it comes up in a game.)