For all three charms, fold and 8-inch piece of pipe cleaner in half, then push the folded end through a 1-inch Styrofoam ball. Attach a key clip through the pipe cleaner loop, then tug the pipe cleaner to pull the clip snugly against the top of the ball.
To make arms for the Dracula or mummy, twist a 4-inch piece of pipe cleaner tightly around the body. For the jack-o-lantern's arms, knot together the ends of two 4 1/2- inch lengths of jute twine, then tie the doubled section around his body. Fold the ends of the pipe cleaners for hands and feet.
Cut lengths of embroidery floss, knot them around the charm's body, and wrap them around the length of the pipe cleaner. Before covering the head, dot the ball with clear gel tacky glue. Also smooth a small amount of glue over the hands and feet to prevent unraveling and to secure loose ends of floss.