Rainbow spaghetti! Cook spaghetti then fill ziplock 1/4 with water add food coloring. Add spaghetti... coolest idea ever!!!

pour various shades of acrylic paint over clay pots http://www.dillydaliart.com/2012/04/rainbow-pour-painting-on-terra-cotta.html

Painting on foil--add dish soap to paint to help it stick. This would be a new idea in my classroom. I would embellish the project by having my students take portions of the foil and engrave designs on them, or rub textures onto the surface. That would make something interesting. Perhaps there is a Christmas project in there somewhere.

Glowing Rainbow Eruptions- what could be more cool than erupting rainbows that GLOW? Seriously a childhood MUST!

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