Picture of the Upside Down Room
This is a picture of my "upside down room" (rotated to look "upright" for the media to use).
The carpet was screwed to a criss-cross network of wood above the walls (we were in a large warehouse). The props were screwed to the walls. There were even fake switchplates and a real door, all upside-down of course. The bed was made by screwing the headboard to the wall and the bedspread to the carpet, with a piece of 2" foamboard inside it to make the "mattress". Once again, the teddy bears and such were screwed or zip-tied to the bed, tables, etc. There was even a stray, opened book "on the floor." As it turned out, the details made the scare work that much better.
At first I was worried that the wrinkles in the carpet would look bad, but with the lighting, it was nearly impossible to tell.
The scare worked like this: The people entered the room (seeing pretty much the same view, but upside down). I entered behind them, while they were looking at the ceiling and commenting on it. I was able to walk right up to most people and quietly wait with my bladed hand next to them. When they turned, to look around some more, I just gave a deep, low, evil chuckle. More often than not, people wondered where I had come from. They usually didn't wait around for an answer! ;)