This colorful and chaotic activity is ideal for outdoor use. To create unexpected bursts of color, children fill water balloons with washable paint and toss them at a canvas or large piece of paper. What you require: Paint-holding water balloons Paint that is washable for vibrant splashes Large paper or canvas can be used as a painting surface. Take care not to overfill the water balloons with paint. Children toss the balloons at the paper or canvas, causing them to burst and produce colorful spatter patterns. For ease of cleanup, this project is best done outside. Because it is thrilling, surprising, and allows them to create large, colorful mess in an enjoyable way, kids adore this activity.