Etsy seller Rachel Rae Case makes art from human belly button lint and fingernail clippings. Pictured above is one example made from the latter:

This piece is a primitive human-like figure who seems to be dancing or chanting. It's strange anatomy: pelvis, revered leg bones large, protruding jaw and curling fingers make it one of the more detailed Human Ivory pieces I've made.

Link via Geekologie