Mark Wagner makes dollar bill collages.
... In the studio we keep hoppers of bills separated into parts to use piece by piece as well as binders of prepared texture swatches and collaged passages to add wholesale. I love all the process. For some of the collages we track how many scraps of paper are glued down. I see that sort of accounting as an interesting extension of the material. When “Liberty” is complete, for example, we’ll be able give statistics on each of her 13 panels individually, and also say that the whole thing took 1234 bills cut into 54,234 pieces, or whatever, and here’s all the scraps we didn’t use.
(via Freakonomics Blog).