Did you spend a lot for the RR signs in the last picture? Marx right?
I use to buy those till everyone thought they were gold, I refuse to finance those sellers. I have not looked for them for a while now.
You said in a post the some figures won't stand in the grass and you used card board.
Another option is to try clear plastic from things you buy in packages. There are different thicknesses some work better then others.
I use them for my O gauge people, where ever they stand on your (dirt, grass, whatever) the color of the dirt or grass makes them blend in nice, you can hardly see them.
And I can move them around the table easy. I don't know how they would work on standard gauge people.
Nice pictures, you do have a bunch of trains!