The Weeper: How many kids would dare approach a porch with this guy sitting there? Could be either an awesome prop or an amazing costume depending on how sadistic you're feeling toward the trick-or-treaters.
DIY Styrofoam Relief - using a soldering iron & drywall compound. Detailed TUTORIAL is for making Halloween decor, but this is a Fab technique & it also contains a recipe for making a faux stone paint finish!!