There was talk of trading in Iraqi souveniers tonight...
At about 13yoa, I went to a Boy Scout Jamboree in Colorado Springs (1960, I think -- I got to shake President Eisenhower's hand!), and for my main "trading stash" I took about 40 rattlesnake skins, from 3' to 6' in length, with the rattles still attached. I got lots of good loot for them!