When I was little my mother would go absolutely nuts when my father left town. One year, we turned the whole house into a haunted house. We made cardboard headstones and had a little cemetery in the basement.
She turned this old squared-off tufted couch to the wall, and dressed it up like a coffin. My brother dressed as a vampire and lay there. There was a bowl of cold spaghetti (guts) for people to put their hands in. We all got dressed up and then we invited the neighbors to tour the house for a tour.
Haunted houses are fun and I love them to this day...except for the part when the guy chases you with a chainsaw. I hate that part.