Bag of Golding

This is a small coin purse that can hold an infinite amount of coins, but will spit out anything that isnt a coin. To retrieve anything you've placed inside it, simply turn the bag upside down and say an amount, and a type of coin that is inside. The bag will then spit out exactly that amount, provided it has it within its contents. Alternatively, you can say "give me everything you louse!" And it will cough up whatever coins it is holding. This bag never gains any weight from the coins inside it.