Tread Softly or Else
Dustbunnies, by Stijn Schiffeleers and Hendrik Leper from Boutique Vizique, is a colony of seven shapes that contain two kinds of sensors, a RF-communication system, two microcontrollers, a big battery, speakers and a motor. When there's no human around, they collect dust, hair, flakes of skin and dirt and murmur to each other in a mysterious language. But if you walk into their territory, they become quiet and pretend to be dead.
The only way to observe them in that first state is to be motionless yourself. Touching a dustbunny will cause different reactions. If they like the way you treat them they will make an amusing sound according to the movement you cause. But the Dustbunnies can also become angry. If you mistreat one of them, all dustbunnies will start screaming. The whole group will show their dislike.