From Inhabitat.com:
“Researchers at the Giant Panda Breeding Base in Chengdu, China are preparing to … turn tons of panda poop into paper. Bing Bing, Ya Guang, Qing Zi and the other thirty-seven pandas at the center produce roughly 2 tons of high-fibre bamboo poop a day! Liao Jun, a researcher at the center believes all the panda poop will be ideal for making souvenir cards, bookmarks, notebooks, even fridge magnets.”
I guess this gets categorized in “Sustainability?”