This one's a really pretty one and it always comes out unique!
What you'll need:
Spray bottle with water
First tape down your coffee filers on a cardboard. I found 2 coffee filters worked better. Now get your kiddo to color all over the coffee filter. The more colors and more area colored the better! Allow the coffee filter to air dry. Then when it is dry, fold your coffee filter like a fan and tie a pipe cleaner around the middle. Then open up and puff your unique butterfly!