Cobblestones

I did a little research on cobblestones, and even though Wikepedia says they have to be rounded, a site I visited is selling antique European cobblestones pictured below. They are granite and come in a variety of colors. I think I will use it as the title for my "favorite quilt" series. Thanks Jean for the idea. Now the other idea came from VickiF from Michigan. She suggested cobblesticks for my "second favorite" quilt series. I am trying to find a reference to the word to make sure there is nothing negative about it because I like the word. So far I think it has been used as and exclamation similar to Oh Fiddlesticks. The only other reference is something to do with sledding, but I'm not sure what. Does anybody have any information about the word "Cobblesticks"?