What about a barter system?
I've actually heard about a new organic currency that's taking the world of private barter by storm. Getting started is as easy as buying a paper bag and enjoying a nice meal. Your body carries out a very complex proof-of-work operation and within 6-12 hours you'll produce a block which can be packaged within the paper bag for easy transport and trade.
They cannot be counterfeited because of each each block chain is easily verifiable by the DNA strands incorporated within. And since your private key is literally unique to you, there is no chance of EVER getting your wallet stolen.
Atlas, I think you should add this to your poll. I think it would beat out even Atlasbucks.
