I was suggesting that instead of having no prizes at all, the organizers should create something simbolic that the winner could keep and proudly show to his friends.
My first suggestion was a bracelet, like world poker series.
Money could be raised by the organizers just to fund the purchase of the bracelets. No need to be something expensive. These ones for example:http://www.reminderband.com/wristbands.php
But maybe something more raw, in leather, homemade by hippies in a fair in the streets of Bilbao, would make the prize even more exclusive and thougher to fake.
My suggestion would be:
3 bracelets for the winning team: