It's "Trick" this year, no "Treat."
But, I am just going the simple route, by setting Robo Dog under the front steps. I'll attach a motion sensor to the inside of the railing, so they'll get right on top of him, for maximum effect. Of course, I can wake him up with the remote keypad as well.
Even though I am not putting up any decorations, I use dusk/dawn porch lights 365. By no means am I inviting people to knock on my door, nor will I turn them off and wonder if someone is lurking outside my window (even for one night). People automatically expect you to be receptive to constant interruption by greedy kids (adults too) in their half-a$$ed costumes.
Of course, I don't want my neighbors to hate me, thinking I am mean and unsociable. Giving them a good scare is better than just not answering the door. It is Halloween, after all...