MD and I made this Mother's Day card for my mother the other day based on an idea for a science type activity I saw on Family Fun Magazine.
I took flowers from our garden and laid them on a piece of watercolor paper folded in half. Covered the flowers with a paper towel and let MD hammer the flowers down until colors were showing through the paper towel. It was pretty neat to see the colors start popping out after he hit the paper.
When finished I peeled the smashed flowers off. The paper towel looked great!