Having already fixed some elements of the original Crossbows and Catapults game, I wanted to try out some builds of my own. So these are my first two attempts, the cannon and the trebuchet. Materials were craft sticks (and BBQ sticks), rubber bands, acrylic paints and pieces of wood (for the bases). The cannon utilizes a dual spring system for launching missiles, while the trebuchet uses weights (I used fishing weights).