Painted sticks. What a great summertime project for kids. I can picture several of these on a wall, either grouped into an abstract design or formed into a frame around a picture. Could also use the sticks to spell out the child's name. Ideas are limitless.
I'm doing this but with old super hero comics instead. Can't wait to show how it turns out! Super Heroes...what's beneath the surface of Clark Kent or Peter Parker?? You could totally go that route for a Beneath the Surface event for teens at your library.