What if you want something but you can't seem to find it? You start creating and make it yourself :-). It's really easy, here's what I did.
I made a marble print on thick photo paper and wrapped this around my wrists. Figuring out how to close it was the next step. A simple way is to put some nice tape on it, black or white.
A more sophisticated way is to perforate two little holes and close it with a tiny metal round.
What do you think of the result?