Might be worth checking to see if any of them are actually collectible and of value.
Otherwise how about unusual wheels, or domed to make lids, et al.
If all else fails: I remember seeing a person at craft fairs who made an amazing range of small models etc using coins, do a Google search for him then ask if he wants to buy them.
I will try and find who the maker was, I've seen him at Craft Fairs in SE England.
Edited By V8Eng on 26/01/2014 20:36:02