Rachelle did this colorful and bright project with the Kindergartners, using the mobiles of Alexander Calder for inspiration. For instructions, see original lesson here. (At the art show these looked awesome mounted on black paper). Rachelle also made a great powerpoint, which can be found by clicking here.
Materials: sharpie, paper, oil pastels
Rachelle's tips: have them use the sharpie to draw a line first, and then have them add shapes coming off of the main line. Then have them use primary colored oil pastels (yellow, blue, red) to fill in their shapes.