For the rubber band quick gun, get a piece of wood measuring around sixty centimetres. To this, affix a peg used for clothes, around two thirds of the way down. In the front part, cut out a deep groove. Your rubber band gun is complete. To operate, position the rubber band in the jaws of the peg and stretch it till the notch. Then aim at your target and press the clothes peg to shoot.
For a pistol, you need to shape a pistol shape out of wood. Then attach the clothes peg at the back by nailing it. Again cut out the notch in the front. The loading and firing process is the same as the quick gun.