When my powder supply topped 40 lb I decided to move out of the house. I got an 8'x16' utility building and insulated and wired it then finished the inside. I now have benches down one long wall and across one end with shelving for supplies.
I have it airconditioned and heated with a small frig for cold beer,( not while reloading).
I'm soon going to install a fold down table for my gunsmithing area, and more shelving under the bench.
What kind of settups do you guys have?