Over the last year or so, my space inside the house has been “re-purposed”. The birth of two granddaughters, one from each son and attached spousal units, meant I needed to give up my hobby room and turn it back into a bedroom for visitors. Most of my hobby stuff went into storage. A little I worked into the garage so I could work in there when temperatures permitted. However we were packing a mess o stuff in the garage. In addition I had installed some steel garage cabinets to house by glass painting supplies. To say the least it was a bit crowded.
A single fluorescent shop light and several incandescent lights made up my lighting. No heat or cooling except for a small space heater and a fan. My glass painting was curtailed because if the humidity gets about 60% the paint does unpredictable, but usually bad, things.
So at Christmas break I secured the necessary permission from the household overlord for a true conversion of the garage into a mancave. Operation Mancave began with getting quotes from various contractors. These ranged from $7500 to $13,000. The low quote actually came from one of the more established area contractors so I signed on the dotted line. I arranged for a POD to be delivered for on site storage. It showed up on January 21. 
A couple of good hard weekends with the sons and the mess above has now become this:
Contractors show up on Monday February 1 and Operation Mancave begins step 2. The final vision has the steel cabinets installed again, the large 4’x8′ table is getting a fresh coat of paint and wheels. Bookshelves from IKEA will line the wall opposite the cabinets and house my miniatures and books. A fridge, tv and AC/Heat unit completes the picture. The concrete floor will get a coat of epoxy paint, the walls get insulation (yay!) and several ceiling LED light fixtures will make it more usable. I still have to share space with the toolbox and some household cleaning supplies but those should not intrude too much.
Hopefully I am moved in by Mid March. More pictures as the project progresses.