That's the best vanity weapon idea EVER. Warriors swing a bag as a 2h weapon, they have a giant coin as a shield and a giant gold bar as a sword, mages could have a gun that shoots coins or a staff made out of a roll of coins, rogues could have two bags of coins as their dagger weapon, not sure what the bow vanity would be...

That would be even funnier than the giant birthday hammer or the balloon dagger weapons!!! Great idea!