I use to hang a wreath on the door, put out a flag, stake a large scarecrow in the front yard with a couple of hay bales and a few pots of mums but over the years it has dwindled down to just a wreath on the door and I don't even know if I will go up in the attic to retrieve the wreath this year.
When the kids were young, we decorated for Halloween -- pumpkins, scarecrows, a string of monster-head lights, etc. Mom had a door decoration that we put out last year, but it kind of bit the dust. Maybe I'll get a new one, she likes wreaths.