This is rapidly turning into the cool-as-you-like thread! Better be careful
For interest, I have a half completed, small footprint shelf layout I'm doing for nephew, when he's old enough. Only one shunter loco refurbished so far, I actually have two more in bits, but all runnable on the same track (with all modern DCC control) if wanted, pretty cool. All short wheel base rolling stock, the layout will be a version of what's called 'the timesaver,' which can actually have up to 7 industries, idea being you draw cards to decide which wagon is going where and puzzle how to get them there in as few moves as possible for your 'operations'.