I have several old pieces of office furniture that have designs useful to TD's. First piece is the case from an old smith -corona typewriter. I store my Millwalkiee hole shooter and concrete drill motors in there. There is also room for my set of hole saws, my drill index, spade bits, concrete drill, screw driver bits hammer, center punch extra chuck keys, everything else needed to drill a hole. It's all right there in one box. Very handy. The case was free. Replacement cost would be around $600 but I assembled mine one piece at a time as needed and afforded. Every TD builder needs one.
The second is a folding shelf on a typewriter table. The folding mechanism is very smart and i have copied it and built mine with steel angle iron and flat bar to form a folding bench bracket for inside my cabin. In the folded out, sitting position, it makes a 13" wide bench, 13' off the floor. These dimensions work for me as far as bench width vs. ceiling height but can be easily changed to suit your specific application. In the down, sleeping position, the bench takes up less then 3' at the front of the cabin. I made the prototype out of bed frame angle iron so it can be very cheap. I first designed this bracket for a shower bench to be made of stainless steel angle iron but that never happened. The SS model would be more expensive but bulletproof. The best of both worlds. When I finish installing my bench I'll post pics. I'm waiting on the wood.
The third is a typewriter thing also. I use an office desk to store tools in my shop. The cabinet in the desk for the typewriter, has a mechanism that allows the typewriter to rotate out of the cabinet and lock into the use position. A very neat contraption. I haven't figured out how I'm going to use this design with my TD but the wheels, they be a spinnin. Maybe a galley thing, or maybe I could put my shop typewriter on it.