The Zen Table is a great conversation piece built right into your coffee table. It is basically a computer controlled Japanese Zen Garden table with a glass top. Currently the Zen Table is fully funded on KickStarter, quick get in line.
"The body of the table encapsulates electronics and robotics, that sculpt geometric patterns and images into a field of microscopic silicone beads beneath a glass top. The effect is mesmerizing and magical; it is truly Zen-like to watch ever-changing patterns and images appear in the sand."