Run your hand across this wallpaper to turn on a lamp, play music, or control your toaster. This project experiments with interactive wallpaper that can be programmed to monitor its environment, control lighting and sound, and generally serve as a beautiful and unobtrusive way to enrich environments with computational capabilities. The wallpaper itself is flat, constructed entirely from paper and paint. The paper is paired with magnetic electronic modules that serve as sensors, lamps, network interfaces, and interactive decorations.