The almighty dollar has lost a bit of its power lately, as central bankers diversify to other currencies in their reserves. Here are some of the options -- both practical and absurd -- to replace the greenback.
Nevertheless, depending who you ask, they have purchasing power and fulfill a niche -- whether for an investor looking for a safe investment, a small baker looking to draw local customers or a jet setter in search of work space virtually anywhere in the world. Fortune takes a look at some currencies that aren't quite currencies.
NEXT: Special Drawing Rights
Last updated July 21 2010: 1:00 PM ET