29 Of The BEST Crafts & Activities For Kids (Parents love these, too!)
Catapult | Materials: craft sticks, rubber bands, 1 lid (Spoon or lid from milk jug, soda bottle, etc), glue gun or glue, and stuff to throw (cotton balls, scrunched up paper balls, etc) | Instructions: http://littlepaperdog.blogspot.com/2012/11/popsicle-stick-airplane-catapult.html
Das Marshmallow-Katapult - einfache und kreative Konstruktionen für Kinder
Popsicle Stick Catapult Ideas for Kids STEM Activity
Popsicle Stick Catapult for Kids STEM Activity.
Long Shot Launcher: Wood Catapult Kit http://www.lovetolearn.net/Long-Shot-Launcher-Wood-Catapult-Kit
9 craft sticks. Popsicle sticks may work, but wider sticks are much better. They can be found online at amazon or at your local craft store (I found some at Michaels for around $10) 4-6 rubber bands 1 plastic spoon Instructions
Homemade Catapult! Start with a scrap block of wood. Hot-glue a clothespin to the block, and a jumbo craft stick to the clothespin, as shown. Then glue a plastic bottle cap near the end of the craft stick, leaving a short lip for a release lever. http://familyfun.go.com/crafts/crafts-by-age/school-age-crafts/colorful-catapult-673272/