After I first heard about it a few months ago, I went in search of Menard's earlier burnt engine shed (they now have a similar piece with a caboose instead of an engine), and found a used one with defective lights at a reasonable price. I added a handful of Evan Design's flickering orange lights and some clear glass beads to simulate still-burning embers, and added an ultrasonic transducer to simulate smoke/fog. I'm still tinkering with it, but here's a short clip: