This year at the HEX HOUSE in Oklahoma I built a fireplace illusion. The room its in looks to be a dead (no pun) end, until the actor tells you to crawl into the flames. Inside looks like a tunnel, dark and tall enough to let a wheelchair through. The illusion is the simulated 'scooby-doo' flames projected onto fog. I put a constant running fogger on the outside that shoots through a PVC pipe to the front. The smoke lifts up through the opening of the fireplace and up through a fan. The projector in back plays a fire video loop. It looks nice and I will post pictures soon.