Well, I don't know if you have it over there but we here in Germany have to put coins into the supermarket-purchase-cars (if you know what I mean)...there is a complete industry that makes little coin-like round metal plates that fit into the cars...so you don't have to use a coin for it....
I would vote that we do that
I have an image of a plastic one
we could do a metal one with the clock logo as detatchable coin-like plate
would look nice I guess...and it will be useful too :wink: