I'd be honored to join this club, and respectfully submit the following photos of the multiple 48's that I've created.
A hallow core door birthday-gift layout I made for my then 3yr old nephew. He's 29 now.
My first official "48". Trimmed the sides so I could load it into the van and run trains at family gatherings.
Last year's Christmas layout.
48's are great for townhouse living. This board is now part of the unqualified (too large) basement layout.