I'm happy to see these are becoming popular over here. I put in a bit of time on the spot patterns over at ChipTalk. I'd get some myself, but I already have WAY too many chips.
For those too lazy to follow the link in the OP, here's a mock-up. Unfortunately they won't be in North America in time for the holidays... took some time to get the colour right on the 5¢ (body) and $1 (spot).