Blandly named Natural Radio (shoulda been iRock), it’s one hell of an exploratory think-out-of-the-iPod design by Cheol-Ki Jo at yankodesign.com.

The device is controlled by putting rocks on the platform. E.g., the more rocks you place, the louder the music. You also change the frequency by doing the same. I think the whole process requires that you find flat-surfaced rocks so that it would be easier to put a rock on top of the other. This is the sort of unergonomics that would have made the Bedrock community proud. Understandably, Natural Radio doesn’t play MP3 as MP3 wasn’t invented yet in the Stone Age.

BTW, the rocks can also be used to pounce on the device.