How nice to meet a fellow survivor! I'm '37 vintage too.
I have not actually made a list of things to stick, physically, onto the camera or into my pocket, but I do admit that I use the thing (Nikon) in as manual a way as it permits. I almost never consult the rear screen when I shoot - I might as well still be using film - and it could be that refusing to sound, regularly, all of its bells and whistles has led to a lack of familiarity with some (many!) of them. Consequently, I would be at a loss to tell anyone how to pick an area on that rear screen and magnify it; that's simply not something I have ever done, other than when I was trying the camera out when I bought it, so why would I remember how to do it, or want to? I trust the viewfinder and my own experience. So far, so good!
It may or may not be a touch of Luddism - perhaps more likely a means of making the pension go further - but I have yet to buy a mirrorless camera beyond the cellphone. I found nothing wrong with my old Nikkors when I was working, so I don't believe my now amateur status requires anything superior, let alone a new set or an adaptor ring to let the old ones make love with new bodies.
Though without buying intentions, I do read the reviews of some new cameras, and it strikes me that much of what's being done today consists of messing about with basic control stuff and forcing users into deep menu dives. Who wants that? It used to be a simple operation to format a card; Nikon has now made it complicated. As I have remarked in the past, it seems that progress means that many things improve without getting any better.
