Keep it simple with Sunflower Toothbrush Art. This super easy art activity for kids is perfect for young artists still learning how to use paint. All you need is yellow and green paint, construction paper, and a toothbrush to make this adorable flower craft idea. Try this easy project with a large group for added fun, or keep it small for a rainy weekend day at home. Either way, painting a few yellow blooms is a surefire way to bring the spirit of summer into your home.