[Worldtraveler once upon a time]

---- "I want to find a way to be able to access, and work on, the same document no matter which PC I'm using. I know that can be done via Drive, but I won't do a cloud. 🫤"

I use a simple and copious USB stick between computers, and make interim back-up files on each, changing the label/name by adding date/time. The USB is the workhorse, and when a file is completed, then it is stored off.

And, yes, another comment mentioned redundancy. I back-regularly.

[MayflowerMadam]

“I use a simple and copious USB stick between computers, and make interim back-up files on each,”

I kind of do that now. My USB literally has the label “sneaker net”.

I back up my main PC regularly. It’s a good idea, except my older external drive died so I lost those backups. The cloud keeps calling me, and I keep ignoring it.