A toilet plunger is a necessary tool for cleaning clogged toilets, but many people do not know how to use it properly. Most people just push it down the drain and hope for the best, but this often does not work. A plunger works by creating suction and using the force of the water to dislodge the clog. In order to create suction, you need to have a tight seal between the plunger and the drain. This is why a holder is necessary. If you do not have a holder, the plunger will move around and you will not be able to create suction.There are many different types of holders available, but you can also make your own. All you need is a piece of wood or PVC pipe that is about 12 inches long and 2 inches in diameter. Cut two holes in one end of the pipe or wood, about 2 inches apart. The holes should be just big enough for the handle of the plunger to fit through. Slide the handle of the plunger through one hole and put your hand over the other hole to create suction. You can also use a rubber band to hold the plunger in place if you do not have someone to help you.