I think you are describing an area to let the finishes dry, a cardboard box like they use for dishwashers or washers and dryers. Put a rack on the inside to hang your calls on. I would also add an air filter on one side with an exhaust fan on the other, something like a small computer fan.
Want to go first class? Go to the resale stores and look for used wall cabinets and create the same thing. I used to have one, but I gave it away with plans to make another, just never got around to it.
Me, I do quite a bit of my finishing inside the house, it is pretty well dust free and with oil finishes I hand rub them for about 20 minutes and then set them on a rack on the kitchen cabinet. After the 3rd or 4th coat and they have cured I can use the buffer and buff off any dust that has gotten to them.
Marvin