Quirky might be the world leader in developing crazy kitchen contraptions, but the company that helps turn regular people's ideas into actual products focuses on other markets too. Such as educational toys that kids will actually want to play with, like the Sound Track: a brilliant mashup of a music box and a toy train that has kids playing composer, conductor, and conductor.
The Sound Track locomotive features the same tuned metal comb as a traditional music box, but instead of a spinning cylinder covered in metal spikes, the track itself features a series of adjustable bumps that produce a song as the train rolls across them. So the set helps foster an interest in music and teaches the basics of musical notation, while kids think they're just having fun. Suckers!