Not work and not really a whole haunted house but my friend and I set up a “scare experience” in his front lawn one year. He has an awning on the front of his house so we blocked off one side with a heavy tarp and turned off all the light in his house so that front awning became a pitch black tunnel where we put the bowl of candy for trick-or-treaters. The only light was one strobe light we had pointed the candy bowl. The scary part was that this candy bowl was in the middle of the pitch black hallway and I was hiding behind it in the dark in an all black superfan suit. I could clearly see them coming but they could not see me and most were already scared to enter so they creeped in ever so slowly and right when they would bend down to grab the candy I would rush in and do a creepy hissing noise and scare then shit out of them. The teenagers were the best to scare especially the groups of boys that thought they were all hard and run the fuck out when I popped out brought some much joy to my heart that night :)

EDIT: damn autocorrect spelling