“Blubber Bot[s]” are basically “fully autonomous robots that gracefully float from place to place, searching for food ( represented as LED lights) and companionship.” Video after the break.
Their blimp brains are powered by Sun SPOT chips, which are able to sense and react to movement, sounds, lights, and heat. In addition to being equipped with blinking LEDs themselves, they have cell phone vibrators attached to their helium envelopes, and when the vibrators go off, the blimp resonates at a specific frequency, allowing it to “talk” to other blimps, and to you
[via OhGizmo!]