We recently held a decorating contest at work, so naturally, I wanted to add a train. Last year, our main display case featured a diorama that I built and we changed with the seasons (see pictures below). This was featured in Classic Toy Trains magazine earlier this year. For this year's contest I decided to try my hand at building a ceiling layout for our office.
This would hang from our existing drop ceiling so limiting weight needed to be priority. I used 1/2 inch plywood and did not add cork (yet). The track is loud, so I plan to add cork when I take it down mid-winter. I hope to hang this each holiday season.
Diorama from last year: