Millions of bottles of beer are consumed around the world every year. The bottles are often recycled, but what about the metal beer tops? An easy way to deal with this would be to create a way to recycle them.

One fun way would be to build a game of connect four into the side of the beer crate. The bottle tops can be used as the counters to the game, perhaps after some friends have finished the crate, and returned with the empty bottles. This is a pretty fun way to do something responsible with the bottle caps.

Submitted by Sebastien Delva