I live near the shores of Lake Superior, Lake Huron, and Lake Michigan. There are more natural, water tumbled rocks around me than you can shake a stick at, not to mention the smooth rocks I can easily find in nearby gravel pits. At $6.95 apice as sold in the link, I've probably thrown a thousand dollars worth of kitchen rocks as a child, just to hear them splash. I mean, who knew?
I think I'll go out this summer and get me a kitchen rock.
. I may have to pick up a few for my children as well.
Seeeeeeya; Chief Longwind of the North