Making a shot glass out of ice is a cinch. I actually used two flavors of a Kool-aid-like beverage to make these glasses; blue raspberry and blueberry pomegranate. Not only do they make the ice shot glasses a lovely shade of blue, they taste good too.
It's Beer Battleship! Play the same as regular Battleship, but when you're ship gets hit, you drink. To really get things moving, fill all the ships with shots and all the free spaces with beer (a little mind you) and drink on every turn.