Make "shiny bright" Christmas ornaments. We trace the circles onto white paper, draw a highlight, then paint each circle to make a sphere using analogous colors. Analogous colors are beside each other in the color wheel and they blend beautifully!
Wonkyworld: Cinco de Mayo Have each student create a quarter of a circle to create the large work. We could incorporate this with our mandala lesson. When they finish their individual mandala, they will do one one black paper for the collaboration.