For whatever reason, my boys love collecting rocks. It isn't unusual for me to remove several of them from their pants when I'm about to do laundry, and if I'm not careful they occasionally will make it into the wash. I don't really no why they love rocks so much, but I do think this project is a great activity and a way to transform a picked-up rock into a true 'pet-rock'. This is a great activity for camp crafting, and fun to do with themes as well like animals, aliens and people. Enjoy!