Haha!
I figured that one out.
I bet Dean Winchester's ring (in Supernatural) is actually Jensen Ackles' wedding ring. He's married to his girlfriend and wants to tribute her by wearing the wedding ring in his right hand. I suppose that's nothing new. I happened to find a shop that sells wedding rings exactly like the one Dean wears..
So girls, lock your dreams in the Box Of Dead Wishes and throw it into the garbage, because all hope has to be abandoned. Or not.
Or, of course I just might be wrong and the ring just might be a Tibetan prayer spin ring..