Collect natural things outside, and create a collage on self-adhesive clear contact paper. (notes: be sure you're allowed to collect where you are, don't take too much, and try not to do much damage the ecosystem)
Richard Shilling on Land Art for Kids what a great idea for outside leaf/nature sculptures. make sure to watch an andy goldsworthy documentary too! Should you appreciate arts and crafts you really will really like this site!
Sandwich the leaves between sheets of clear contact paper that I had cut into circles; then, laced them into the metal ring with narrow orange satin ribbon, through holes I had punched . Idea by - Maure Claire from DISHfuntional Designs