Pix
I checked with our resident god, S.o.S, and it's OK to post lots of pix, PPrune doesn't have a problem with the extra bandwidth that pix take up.
Accordingly, I took a look through my collection of photographs that I took back out of the window in the 1980s and 1990s, before there were affordable digital cameras, and came to the conclusion that - I don't actually have any pix that are that memorable. The best are of coming into JFK when the twin towers were still up, and the approach into Kai Tak. There are Youtubes of both that are better than the stills I took. Also, I'd have to get steam up on my scanner, which is too old for there to be a Linux driver for it, and crank up the Babbage engine to run Windows 7, to scan the pix.
Other commenters, for example on the thread about the first airliner you flew in, have contributed pix which got 'liked', and I'd love to see more of them. Would you? I'll bribe you with the promise of 'likes' if you put up pix I find especially nostalgic.