Those farm scenes are great some really nice modeling classic and scale really look good.
I made a little shelf with a simple farm scene on my layout at little kids height with Ertl farm toys barn etc. it is not that fancy but made it for kids to play with it. My kids when little played with it a lot and now their kids my grand kids are playing with it. They get a lot of use from it.
I am just working on some sound modules for farms right now, installing them at our railway museum model railway display. I have found Little Sounds modules have some pigs and cow sound systems. You could use these on your railways or install them in a moving cattle car, cheap and easy to install. Can have a push button to start them then they shut off after going through the sound cycle or they can run all the time. Check them out cheap and good size easy to set up.;
