Club Penguin has releasaed  Goldsmith Aprons for you to buy in the ninja catalog. The aprons work like any other special item. Dance to make your penguin  hit a golden anvil with a hammer. It is like the Medieval Blacksmith apron, except this one is black and instead of a regular anvil it is a golden whole. There are blueprints for amulets, these aprons fit in with that, but the mystery is still there, what are the amulets for.