For Christmas I got a set of pets that are designed to create complementary sounds. They are like long mice and sing in different tones when you pet them. The one with the highest pitch is yellow with brown stripes. The one with the lowest pitch is blue black. I’m still figuring out the others exactly but it’s hard to keep track because they keep squirming around. Mostly I just run my fingers through them like windchimes, and not play them like a xylophone or anything.