DIY Projects & Crafts Sidewalk Chalk Paint It's easy to make your own wash-off nontoxic pigments using just a few household items. This is a great hands-on activity to keep the kids happily occupied at your upcoming block party, barbecue, or any ordinary summer day. By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on May 27, 2019 Share Tweet Pin Email What You'll Need Materials Water Cornstarch Dry tempera paint Small container Stirring utensil Paintbrushes Instructions In a small container, mix equal parts water and cornstarch. Add dry tempera paint, and stir until completely dissolved. Use a paintbrush to stir and paint with the mixture. When done, it washes off with water.