Coming down the home stretch on my Lionel Dealer Display D-105. Although it's not faithful to an original display I had some Mianne 5x9 benchwork available so used that for the framing. What to do for a control panel? Lots of discussion in previous threads about what to use with Mianne. They make a rolling cart for underneath but didn't want to go that route.
I made a simple frame and anchored it to the benchwork by adding some cut 1x4 pieces underneath. It's mounted at one corner and next will add a piece of fiberboard on top. This will hold the ZW and assorted control switches.