I have more fall-ish/harvest decorations (pumpkins & other gourds, leaves, scarecrows, foxes, & owls) than I do Halloween-specific decorations, but I do have some Halloween decorations that I have displayed in October.
I love flamingos, so I have black Flamingo Skeletons that are outside in our our front yard flower garden.
The table in our foyer is decorated w/ a "Haunted Mansion" theme, & I also have a black wooden "trick or treat" statue w/ 3 black cats on it that stands in a corner in the foyer.
On the kitchen table, w/ the fall tablescape, there are 2 clear glass candleholders, & the candles in the holders are standing in candy corn.
Our fireplace mantel is decorated w/ a Edgar Allen Poe's "Quoth the Raven Nevermore" theme, & I have a burlap candy corn banner that hangs on the front of the mantel. I also have 3 small stuffed black cats on a shelf & 2 larger stuffed black cats on an end table in the family room.
Over the years, my mom has given our kids Halloween-themed stuffed animals, so on the stairs going up to our bedrooms are 5 teddy bears dressed as candy corn & Jack-O-Lanterns.
In the kids' bathroom, I have a framed chalkboard print on the counter by the sink that says, "Wash your hands. Only YOU can prevent the Zombie Apocalypse."
And, finally, I have several Jack-O-Lanterns.
In November, the Jack-O-Lanterns get turned around so they're just plain pumpkins. And all of the Halloween-specific decor gets traded for Thanksgiving-specific decor.