To make it appear that doors (like locker doors) are opening by ghosts, tie a piece of clear fish string to the handle of the door to be pulled on each side of the handle. The string should be about the same size. At the end of the string (where the pulling will be done) make a loop so that the puller can fit there hand in there with ease. Place once person who will pull open the door opposite of the inside of the door when pulled open facing the back of the door, and another person who will close the door on the other side. They should be hiding, whether ducking, on their knees, etc. The lights should be dimmed just enough to hide the string. The first puller pulls their string just enough to open the door, and the one who closes it should feel a jerk. It is then that that person pulls to shut the door, and the other person feels the jerk and opens the door and so on. This is a repeated process that shouldn't stop or the effect is ruined. The strings should not be pulled too hard as they may break. Be careful not to get the strings tangled as this is a mess to straighten out.
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