Frank Farris is a mathematician who has some wild ideas about wallpapering your hyperbolic house. I wrote about him for New Scientist. If you subscribe to the magazine, you can read the story here. I hope to post a pdf of the story soon; in the meantime, feel free to email me for a copy.
Incidentally, you can now buy real wallpaper of Frank’s designs from a company called Spoonflower. If you buy it and you use it, I’d love to see a picture of these designs on a wall.