I made this picture really big on purpose, so you can get a good idea of what the shells look like. These are typical of snail shells that are in the lakes here. The birds usually bring the snails to shore and eat them, to leave the shells behind. I find these all the time on my journeys to the lake with my dog, Scotty. I am in the process of making them into a mobile. I thought it would look very cool/neat/interesting/organic/natural/lively. I figured I'd use small branches to hang the shells from. It's still in the planning stages as I'd like to retain the natural look of it without adding too many extraneous findings. I'll figure it out.