I have a rock tumbler. I do.
I got it from a lovely lady called Lucy in Ardeer. (I think it was Lucy), off the Freecycle Website. I have been looking at them on line for Ages, but just felt they were too dear. (Cheapest being £39.00), so I put a note on line at Freecycle, and someone, Lucy, came back to me and said she thought her brother had had one, but had abandoned it. She toddled off to her mums, and found it in the garage. I've just put it on and it works! Apparently it takes weeks for the stones to polish, but I'll give it a bash and see how I get on! Cool eh.