How to Make a Great K'nex Weapon Instructable : 10 Steps - Instructables
Knex Pistol : 6 Steps - Instructables
The Definitive Guide to K'nex Weaponry on Instructables. : 6 Steps - Instructables
Little K'nex Airplane : 5 Steps - Instructables
Knex Catapult : 14 Steps - Instructables
The Guide to K'nex Guns : 8 Steps (with Pictures) - Instructables
K'nex Hammer Lift : 7 Steps - Instructables
Simple Lego Launcher : 7 Steps - Instructables
Knex Catapult : 8 Steps - Instructables
New K'nex Roller Coaster Propulsion System : 6 Steps - Instructables
1000 K'NEX Models to build
The Apocalypse - a K'nex Ball Machine : 8 Steps - Instructables
K'nex Paper Wad Launcher : 11 Steps - Instructables