I'm 65 and I think alot of us got back into this hobby because we had it in our childhood's. It seems now most of my memories are becoming of my current layout, At the time of growing my layout in the late 90s I was acquiring all the postwar stuff I had when I was little on top of my modern MTH railking stuff, and at the time lionel had that postwar reproduction stuff.
We had a boat on the Cheasapeake bay and on the way home from the bay we would stop at the old Just Trains and I was looking for a Red 6560 Bucyrus Erie crane car,anyway right in front of us was a Railking i think crane car with the Chessie logo.My wife said "O look at this a Chessie one,I like this one, get this"
I did, but going around the layout the crane would swing sometimes
So I ended up putting it at the end of a siding where it has sat for over 20yrs
If I ever have to move where i wouldn't have a layout,but only a few things on a shelf,This would be one of them.
And between all my engines most were some kind of a gift from my wife,which also makes for very nice memories of when i received them,
One year we opened all our stuff,and it had to be an hour or so later,I walked back into the living room, and between all the opened stuff around the tree was another present now,with my name on the wrapping, with my wife just sitting there looking at this.
It was a new railking loco PS3 {my first,picture enclosed}
I actually have quite a few memories of train presents from my wife, first RTR set,first passenger sounds,first PS2
Once my aunt gave me a check for my birthday,and I used that money to buy a freight car for my passenger train
Most of the stuff on my current layout has a nice story behind it,that are now
"My Current Nice Memories"