One year we did several rooms for a school sleep-over type party. The overall theme was: "Boo-t Scoot-in' Boo-gey," so we had a lot of dead cowboy-dressed skeletons and the like everywhere. We fashioned rustic-looking "Old West" signs for every area. One room was called "Beauty Pallor" (instead of "Beauty Parlor") and it had lots of jars with cosmetic-like potions, and a two-way mirror. A trickster was behind the mirror wearing a skeleton mask, and whenever an individual stepped in front of the mirror, the trickster would quickly turn on the light set up near him and his skeletal face appeared in the mirror. Great effect, and not too expensive to put together. Any glass company can cut a 2-way mirror to fit a frame you find at a discount store. The refreshment area was called "Dead Man's Gulch Saloon". Your imagination can take it from there.
"Rust Never Sleeps." - Neil Young