Adding some wagon loads and a guard ...

 For my cattle van I put a couple of old Schleich cows onto a base and then put that in the cattle van; can only just see the cows through the gaps in the van.

 Next up were some removable wagon loads, I made up some bases from plasticard and scribed them,

 then painted them a light grey and glued on various items barrels, boxes etc to give me some loads I can now swap out of my wagons ...

 

Lastly I made up a narrow base of card painted it as close as possible to the guards van grey and stuck on a guard (Bachmann figure), the guard on his base can removed if desired