You have a key that if used to lock a container will allow any fake things stored inside it to become real after 24 hours. The key works on any lock and anything made expressly for storage purposes. Sure you can put a toy in there and bring it to life, or toy guns to real guns, fake money to real money, uh, a mannequin to a real person? A dragon statue? Any fake representation of a thing will become real. Just don't get eaten.