It’s probably cheaper to buy a Diamond Vibrato pedal than it is to cut eyeholes in a good set of high thread-count sheets. Beware that lots of pedals say “vibe” when what they mean is “trem.” For the cheesy, Scooby Doo-style ghost (“OoOoOoOhHhH!”) you’ll need pitch vibrato with lots of depth. This pedal has a depth switch that can increase the intensity of your haunting. It will have your neighbors shivering in their pajamas and running to phone Art Bell. diamondpedals.com