MouseTrap Catapult by JoshBar

How to Make a Trebuchet by howtowithmanish

Howitzer Potato Cannon by Flagella

Trebuchet of the large variety (a work in progress), 4.28… by StepsoftheSun

Cheap/Easy Rubber Band Powered Launcher! 100m+ by son of s8an

Popsicle-Stick Catapault by zjschafer

"The Insensible" - a counterweight trebuchet by squiggy2

Cardboard Trebuchet by sphsengineering

Mini Clothespin Catapult And Crossbow by vishalapar

The Curiously Strong Trebuchet: A Pocket Sized Medieval … by Ethanal

Launch It: Torsion Spring Catapult by i make shooting things

Pocket Catapult by MrF_DT_teacher

Quick-n-Dirty Trebuchet by SFHandyman

Easy Backyard Catapult for Hero Dads by bgepp1

Build A Net Gun by crispyjones

Scout Project: How to build a Trebuchet by Biggsy

How to Make a Medieval Trebuchet Out of Cardboard by ineverfinishanyth

Pocket Sized Minty Catapult by scooter76