Love the Ceiling Central Mark.
The most Mrs. lionelski allows me to have on the main floor is a display cabinet with my Standard gauge trains, my Christmas Tree standard gauge layout and a sign over the basement door that says "To Grandpa's Train Room".
I do have in my main floor office a couple large RR paintings, my RR books and my Davy Crockett collection.
That said the whole basement is MINE (except for the laundry room, and I don't want that anyway)