Years ago I bought this small and cheap 1:400 JR Chou-Sobu Line E213 EMU model from the CAPSULE ゲージ serie while I was in Akihabara and I wanted to make a proper stand for it for a while
I downscaled and 3D printed those Japanese Buildings and sculpted a simple custom elevated rail track for it, sprayed it white to have the train pop out more (and because I'm a very bad painter), glued everything on a styrene board and now I have a nice desktop mini train diorama!