Firing projectiles, such as lead musket balls, buckshot, steel ball bearings, air gun pellets, or small nails, a slingshot was capable of taking game such as quail, pheasant, rabbit, dove, and squirrel. Heavy rubber bands, strips of latex sheeting, and even medical tubing are all good options, and will make for a slingshot with a lot of force. Once you've gotten your hands on a suitable material, double it over and cut it into two identical pieces. Each piece should be approximately the same length as the frame.