So my students in 3rd grade used paper mache' over a balloon to create a version of Chihuly's "Nimja Floats" or as one of my students wrote- "Ninja Floats". It was a mess, but as you can see from our installation in progress, well worth the experience.
Each student painted their sphere one solid color, and then used paint in glue bottles to add accent colors on. I used them to create an installation a la Chihuly in our hallway. I think it really gets across the idea of a group project. Individually, they were o.k., but the impact was greater as a group.