Master Geass
Terrarian
I think it would be fun to have a new kind of music box. Unlike the certain ones that play one of the in game songs you could make your own song. After setting it down you click it and it gives you a menu like with the signs. It gives you a number of keys you can move up and down to change the sound. You can even have the key silent for a gap. There would also be the option to have it go on a loop or just once. Like with the normal music boxes you can turn them on/off with wire.