http://online.wsj.com/public/article/SB119766934184930123.html In a nutshell: cross sock knitting with the game "assassin" - everyone is given a target, the target's name address and shoe size, and a sock pattern.
Knit socks for your target. Mail them.
Your target is now dead, and must sent their target's info, along with their partially completed socks, back to you.
You then finish those socks, and kill another target, assuming you don't get killed first.
Almost enough to make me go learn to knit socks....