Er13k was inspired to create an Arduino music box to go along with his girlfriend’s giant stuffed dog Tobias. This eventually morphed into something that not only plays songs on its own speaker, but also lights up a 3D-printed keyboard with LEDs. Perhaps its coolest feature, though, is that it includes an RCA output jack to show a cartoon representation of the plush toy on a CRT television.

When the AV output is active, the device pushes tunes through the TV’s speaker and displays 95×95 pixel drawings and simple animations. 

You can see it demonstrated in the video below, as well as some of the build process. On his “channel,” Tobias gets hungry, makes a drawing, and… becomes quite unsatisfied with his job.