The Barbapapas make a great DIY toy project - little kids can look for smooth stones and help paint the background color. Mom can add the faces later. This project is easy and a great toy!
Beach Pebble Art Stone Pictures "Up, Up and Away" --rock art on Etsy
Lots of neat stone art.
Stones painted as strawberries when put around strawberry plants in the spring will keep birds from eating your ripened berries. Birds experience the stones first and will think the ripened berries are rocks.