How to get the ghosties to appear on cue?
Volume Volume volume.
You have 37 spirits available etherally stringed to that buiding and also be near a cemetery and rely on the show times to coincide with the wobble of the earth's magnetic grid, so twice a day there is a wave of activity. At Jims latitude the grid sweeps about 43 miles back and forth and he is in a dead zone for other interference like cell phone and radio signals.
Oh, yes and Jim is actually dead too. And he passes a lots of gas that things can be projected onto.
Another fabulous post from the U.S.Department of Wild Imaginings, now in spectaclar stereo, sponsored by the Adhesives and Sealants Council, suggesting ways to stick things together since the 1800s. Not fabulous in a gay way. Your results may vary. Illinois residents add 8% sales tax. These posts have been made by professional post makers, do not try this type of posting on your own without extensive training, lovely assistants and a trusty clown horn.