No? So many creations would be just lovely to have them run as screensaver. All the powerplants, clocks, factorys etc. Whole new series of creations would come up, I guess. The screensaver could just be a simple app, starting the powder toy with a new -noUI switch (hm, possibly one would have to throw a black box over the screen first, but that should not be too hard, wouldn't it?