Ginormous list of projects for Halloween. Get started now, why not? My buddy Pandragon was telling me the other weekend about a Halloween ride, complete with triggered "events," that somebody bought for the cheap. They then set it up in a large space and had their own homebrew Halloween haunted house ride. This was in Alabama, so of course the cemetery had tombstones that had stuff like "Public Education" on them. I told him he needs to throw pics of that online.
A guy created a roller coaster in his backyard. The "Blue Flash" takes you "over the tool shed, under the elm tree, and around the rose bushes - all in 30 seconds." Brilliant. Found as well via MAKE Blog.