At first glance the Otamatone sort of looks like some kind of unfortunate Pac-Man on a stick, or possibly even some sort of warped tadpole drawn by Tim Burton, though upon closer inspection you'll see that there's far more to it than that. Developed by Maywa Denki and Cube Works, the Otamatone is actually part toy and part musical instrument, almost reminiscent of a Russian theremin.