On the Sodor Island 3d Forums, some people make little dioramas and show them off in screenshots. I've caught on to this, as it allows a nice route in a small space in a short amount of time. These sets are usually 1 baseboard, and are not fully textured. It is a diorama, a lot of content in a small space. These dioramas allow me to express ideas without getting bogged down in the time it takes to make a big route.
The Sodor Suspension Bridge featured in Calling All Engines, and has made appearances since. Requires zeldaboy's bridge from here.
Not the engine, but rather the station set. Also includes the crossing from Steamroller and the slate
mine.
A full baseboard of Crovan's Gate as portrayed in Very Old Engines.
Based on Knapford Junction from Series 1.
Sets from Rock n Roll, You Can't Win, & Four Little Engines.
A route based on the Old Iron Bridge sets from Duncan Gets Spooked.
A diorama based on the Skarloey causeway.
This diorama is the village station from Emily's New Coaches.