Gamblers don't always bet with money, and they don't always limit their betting to the casino. This is as true in art as it is in life. After all, if Lando Calrissian hadn't bet the Millennium Falcon in the "Star Wars" saga backstory, Han Solo would never have won his legendary spaceship.
Stories abound of people who have run out of money, but throw a gold watch or their car keys onto a pile of poker chips, so desperate are they to stay in the game. Stories also abound of people who put a bunch of money on the line to challenge someone to live up to a boast that they've made.
Gambling can be so irresistible and compelling to some people that they'll do it even if there's no money to do it with, and no official venue in which to do it. CNBC.com presents a list of strange items that people have bet with, and the peculiar things that they bet on.
—By Daniel Bukszpan
Posted 16 April 2014