Origami - bill folds

http://www.pfadvice.com/2007/02/21/5-great-ways-to-leave-a-tip/


Photogalleries:
http://art.commongate.com/post/show_me_the_moneygami/photos/41490
http://art.commongate.com/post/show_me_the_moneygami

Money Portrait Origami [h/t: Neatorama]