My layout is the essence of toy trains. It's my version of the Lionel Dealer Display Layout D-105, a 5x9 multi-level running two tracks. I added a few tweaks here and there but it is mostly faithful to the D-105.
Lots of operating accessories and trackside signals and pure fun for me. Postwar is what makes it all go for me.
EDIT: Here's a short video of an original Texas Special passenger set with the "red letter" cars.