OMGGGG Make, explore and paint rainbows. Use a CD and sunlight or a flashlight to cast rainbows, study and paint with watercolors or color with markers or crayons. A great piece of process art for kids. Art and science, STEAM projects for preschoolers.
DIY Beach Painting (create faux texture for real looks
StarEsStar posted Smash Book Doodle Ideas: Make simple shapes (circles, squares, rectangles, etc). Once dry, make doodles and drawings outlining the shapes with black pen. to their -doodles- postboard via the Juxtapost bookmarklet.