Not much of a Winter theme here. This year we built a loose interpretation of the Ozzie and Harriet layout in postwar style on a 5x9 ping-pong table.
Painted muslin is the topsheet. The original plan was to have it sit directly on the table top and just fish the wires under the fabric. That quickly proved to be too difficult so the foam sub-bed was added.
We glued sections of 2" thick foam to make a sub layer and added scrap pieces as risers to provide underside airspace for wiring. All wiring was done before moving the foam onto the table.
All tubular track, switches and postwar repro accessories.