When you're on a nature walk on a sunny day (or just rooting around in your backyard), gather rocks in all different shapes and sizes for rock art, as shown by the Chehalem Cultural Centre. All you need is any kind of paint and paint brushes for kids to create beautiful art on their rocks. The small surface means your kids have less chance to get paint everywhere. Spread some kindness by giving them to a neighbour in need or putting them somewhere in public next time you go out.