Roman Catapults, one my kids can make with almost no help
Easy catapult !
Castle and catapult craft. Maybe we can make cardboard castles and medieval weapons to try and penetrate the castle? Sounds fun.
Making a DIY catapult using recycled materials
Build a pirate catapult
Tabletop Ballista, Catapult, and Trebuchet - Make Kits
Lego Catapult | Kids Activities Blog
catapult craft for kids | My Mommy Style