Writing on the sidewalk with chalk is a time-honored spring and summer tradition. It’s a lot of fun but as soon as the rain hits, it’s all over for your game of hopscotch. Make rainy days more fun with Invisible Spray, the street art that comes to life in the rain.

This stuff is a lot of fun. You use it with stencils, mostly, to create designs on concrete sidewalks. When it dries, you see nothing. It looks like any other sidewalk. But when it rains, your design appears! You don’t have to wait till it rains, you also just splash it with some water.

The designs last for 2-4 months but if you want them gone sooner, they clean up with soap and water. The paint is ecofriendly so allowing it wear away slowly won’t do any harm to the surrounding areas, nature wise. Each kit comes with a flower stencil, but you can easily make your own with cardboard for more designs. Get out and have fun! A 2oz Starter Kit is $19.