How to Make a Catapult for Kids - this fun STEM Activity will keep them busy for hours! Four to six Popsicle sticks, three or more rubbed bands, glue (or glue gun), small cap, cotton balls or other small items (buttons?) for catapulting.
Fun Kid Activity: Lines of Colored Tape, straws and pompoms. Try straws and cotton balls. Adding the lines ups the challenge. Using pompoms allows you to adjust the size from tiny to pretty big. The pompoms are also nicer looking.