At the Whitinger Farm, we are busy making stepping stones for a walkway between our driveway and the house. It's an ambitious project and we've already made dozens of stones. By popular request, here is the tutorial on how we're making them.
Carol, thank you for that kind offer! We actually have a lot of shells, too, we just haven't tried them out in the stones yet. My big concern has been that the shells may break too easily over time.