Where can I find a BMW charm for crocks?

Ok so my boyfriend is a huge car buff and he's really into BMW's. We joke because he has this pair of crocs that i absolutely hate and as a joke I tell him I'm going to start buying him those little buttons you can push into the crocs. I would like to find one with the BMW logo for christmas but I don't know where to find one? Any help would be great! Serious reply's only!Where can I find a BMW charm for crocks?I don't know if they have actual BMW ones but I came across this site so it's worth a try. It's called Jibbitz.