Musicians rarely need to replace their instrument, but they often need to replace accessories. If you have a drummer on your list, drum sticks are always appreciated. If you can, check out the sticks they have already and get them the same kind.
Art Deco Inspired Industrial Reclaimed Recycled Metal Keys Chandelier (I like this more every each time I see it! BTW: I'm pretty sure we have a stockpile of old keys, although you could use almost anything)