Every year around this time I get the craving to design and build a scary element into my layout, yet am space-challenged and other layout tasks and household chores, work, etc., take precedent.
I don't have much to contribute in the way of inspiration, and am hoping others do. Last year, I purchased the Addams Family house (Dept. 56) and set it up on the mantle. This, along with Dracula's castle and some figures, was as far as I got. Combing Halloween stuff with O-gauge layouts is a challenge. Eventually, I'll figure something out, and it very well may be a permanent addition as I don't have time to change scenes.