I still have my 90s childhood plastic jointed skeleton - his name's Kooky, and he still makes an appearance on the porch every year. Been repaired a time or two. He's bigger than the paper ones, probably 4'.
Classic witch-hits-a-tree prop is very 90s, probably older.
Paper bag luminaries.
The leaf bags were definitely a thing, starting to see them again.
The battery operated shaking ghosts
Spooky sounds cassette tapes
Definitely the Telco animatronics (I have the witch and Dracula)
Lots of string lights, garland, and Lisa Frank party favors like pencils (I still have to buy pencils every year), erasers, bookmarks, treat bags, etc.
McD's happy meal treat buckets
Seems like more home made crafty decorations. One of my teachers would hang tissue paper ghosts from a tree, and hand out tootsie pops covered with a kleenex as little ghosts.
Spray painted hay bales!
A house in our neighborhood was the original Halloween house doing the haunted yard thing. I remember the classic caged gorilla, and one year they built a volcano over the top of their fountain. Really wish I had gotten to know these people.