Soaps need not only be used during showers. It can also be used to
loosen stuck zippers, for instance. Whenever a zipper gets stuck, rub it loose with a bar of soap
along the zipper's teeth. The lubrication will get it moving. Also, if your
chest of drawers or dresser drawers are
sticking, rub the bottom of the drawer and the supports they rest on with a bar of soap to make them glide again.