It's not a bar of soap, and it is an actual, electronic gadget. But what does it do?
Turns out this is a design for a radio. Yes, a normal FM radio, except you control the volume and tuner by rolling the radio itself either forward and backward or side to side, like a mouse. It's only a design for now, and we're not sure how the sound would be, but I'm a sucker for blank white plastic gadgets. [Yanko]