My favorite coin so far is the TallCoin: "I will issue 1 coin to any person who is taller than me (I'm 6'7")".
https://www.onhexel.com/token/bb571299-e19a-4671-9036-7b3e73...
https://www.onhexel.com/token/bb571299-e19a-4671-9036-7b3e73...
(not a hexel coin, but another ERC20)