More to explore:
bubble painting, but this website has lots of awesome craft ideas for kids
DIY Easy 2 Ingredient Sensory Rainbow Bubbles and Foam Tutorial from Fun at Home with Kids
Bubble painting...mix food coloring in with bubbles...blow on page...let them pop
Kid's Craft: Paint with Bubbles.
Play at Home Mom - Lots of great ideas for activities with kids.
DIY Rainbow Bubble Snakes and other Better Bubble Blowing Techniques!
Spaghetti painting! Oh my.
How to make Elephant Toothpaste and some other neat kid's projects
Easy kid craft
Bubble wrap fun!
Blow bubbles that bounce instead of pop.