Stumbled Upon this quaint li’l video on YouTube that had an artist creating really nice illustrations out of sand! Its done with a few handfuls of sand over an illuminated screen and with deft movements of the hand, the sand is transformed into interesting silhouettes and whatnots! See it to believe it….
P.S: Itz a 10 Min video, so give it a li’l time to load. Or else watch it right at YouTube itself.
Another Interesting video: Multi-Touch Interactive Screen