+ Robot mounted camera for computational camera motion, image integration, 3D reconstruction

+ Candle drip patterns, building up form over time (think about other phase change materials e.g. melting ice)

+ Cooking, Mixing, Cutting Food, Cappuccino pattern maker

+ Computationally controlled shadows and light (maybe include mirrors)

+ Surface etching/scraping (either mechanically or with acid)

+ Magnetic tool. Attract/repel/drag metallic objects

+ Robot mounted pico-projector for lightwriting

+ Keepon tool head for soft contact

+ Internet control

+ Image making (e.g. paint ball gun at different angles to make an image)

+ Robotic lighting environment or responsive task lighting

+ Pet babysitter (games to play with cats and dogs)