As I have noted on another thread, my 8' by 24' model railroad is called the Little Boston & Maine Railroad with all passenger cars, maintenance of way cars, cabooses, and all but one of the locomotives are Boston & Maine (that loco is a Maine Central diesel loco that I misread in a MTH catalog). The freight cars are labelled from New England railroads and industries. The scenery is a rough representation of rural New England.
And, as usual for almost all of us, it is not and, probably, will never be complete.