Take apart the clothespin by removing its metal spring, then hold the two wooden clips back-to-back. With the utility knife, carve out a barrel for the matchstick ammunition. Then glue together the two parts, back-to-back. After allowing time for the glue to dry, slide one end of the metal spring through the space between the clips, and place the other end over the outside notch. Now load a matchstick, and there you have it: a mini-sized pocket pistol that shoots matchsticks and toothpicks.