Last year, with one of my classes at the kindergarten, we used some of the WotC downloadable paper mini terrain/building pieces to make a Halloween Castle.
This year, a buddy sent me a link from Facebook to a page with printable fold-up paper Halloween monsters. Just printed up a bunch on card stock for my kids to make today.
Here's the link.
Judges Guild - The Dungeoneer #17 (May/June 1980)
34 minutes ago