The Messiest — But Coolest — Outdoor Art Projects

If you’ve got a large patch of bare driveway, this is the perfect project. With a basic setup that even the most clueless parent can copy, your kids will create mesmerizing swirls, loops and splatters of color while exploring the physics of pendulums. You can find out how to do it and the recipe for washable sidewalk paint at Kids Steam Lab —  make sure you test its washability on your driveway before you get started.

Up next: Salt art