ATP: Astronomical Toilet Paper
Today's Daily Yomiuri has an article about astronomical toilet paper, created by a group of astronomy graduate students, planetarium employees, and others. It features the life of a star, from proto-star through main sequence to red giant. The paper itself is only in Japanese, so far, but there is an English web page linked from the above.
Great quote from one of the creators: "In your toilet we'd like you to feel the vastness of the Universe and realize that men and the Earth exist as part of the universe."