I have a wrap-around porch (kinda, it's cement) and we've put up black plastic sheets all around it, boxing it in. Inside we've hung up ghosts and skeletons, put skulls on the ground, spooky faces, spooky pumpkins, and put a blacklight and strobe light in the dining room shining out into it all.
We're making kids not use the front door, but the side door instead, so they have to walk through spooky land to get some of the 20 pounds of candy.
It scares me in the dark (especially with the wind moving the plastic sheets around!) so I'm sure it'll work juuuust fine on little kids.
Next up: spooky mp3s to play from the dining room into the spooky porch of fear.
I'm downloading some now at 1 KB/s from a really busy site, but I'm not sure if they'll finish, and I'm not sure how good they area.
If you have any Halloween or spooky mp3s, can you email them to me? firstname.lastname@example.org. Thanks!