There are not too many reasons to keep playing NES games on an actual NES; not when you can emulate on new equipment. So you might as well do something useful with your old cartridges an turn them into harmonicas – or buy one that has already been made for you?

The bidding on cartridge harmonicas made from Dick Tracy, Legend of Zelda and Super Mario 3 starts from $7. [eBay via Oh Gizmo]