If you've been vexed by the age old problems of carrying loose change and needing a unique conversation starter, may I suggest a quick stop at the Scrotum Gift Shop. Here's what they say about their "pouches":
Kangaroo scrotum pouches are made from the scrotum of male kangaroo, and it's said to be very lucky; all those in possession of one is assured of a long life, happiness and healthy children.
I suppose the luck, happiness, etc. only applies if you're not a kangaroo.