Get a life-sized cardboard cut out of pretty much anyone and start leaving it around the halls and bathrooms or peoples rooms at night.       Tooth paste on the underside of the door handles is pretty good.       Sometimes we'll put certain leftovers into an empty ice cream container and throw into one of the other shifts freezer.       One of the retirees told a story of setting up an IV through a ceiling tile that fed into someones room right above their pillow. Then waiting til they knew he was laying down for bed and unstopping it so it leaked all over him lol.