Auction to Ride
You know about AIDS/Life Cycle right? The six day June bike ride from San Francisco to Los Angeles that raises money for the San Francisco AIDS Foundation and the Los Angeles Gay & Lesbian Center. Participants travel 585 miles and raise a minimum of $2500 per rider in the process. If you're insane enough to want to do something like this, there is still time to register.
Two excited cyclists have come up with an ingenious way to fundraise: they are running an auction on eBay in which the winner will get to determine what red clothing they will wear on day 5 of the race well known as "red dress" day. You've got about 4 days left to place your bid.