This year I'll probably do nothing and like it since I live in the city, basically. Unless I get invited to a party.
In the past, my sister and I got way into decorating the family house and lawn with all sorts of grave stones, strobe lights, fog machines, black lights, corn stalks, torches, pumpkins, bound-stick figures and scary music. We'd also make life size mannequins of the killer from Scream and maybe Jason Voorhees. But the best would be that I would put on the Michael Myers mask and a dark jumpsuit and just stand in the shadows to the side of all our decoration. It was pretty hard to see me at first but when the kids did see me, they'd be scared. The parents too. Good times.