Here's an edible painting medium to try: for some scratch n sniff painting fun, just mix a high concentration of KoolAid with a little water in a bowl. Dip your paintbrush and start painting your way to a berry good time (sorry)!
We tested three flavors: cherry, grape, and lemonade. Cherry and grape performed best -- lemonade needs a really high concentration to not be washed out.
And here is the final product, ready to be hung in a museum -- one where it's ok to smell the paintings. We spend so much time warning kids not to ingest their art materials that it's a nice change of pace to paint with a drink and produce something that's fun to smell. Caveat: KoolAid stains so protect your table and clothes!