There’s a lot of space above the shelf in most closets. Even though it’s a little hard to reach, it’s a great place to store seldom-used items. Make use of this wasted space by adding a second shelf above the existing one. Buy enough closet shelving material to match the length of the existing shelf plus enough for two end supports and middle supports over each bracket. Twelve-inch-wide shelving is available in various lengths and finishes at home centers and lumberyards.
I love a good shop tour, but it’s super motivating to me to hear you say that you built it all in a few years on good old-fashioned hard work. About 8 years ago, I lost an office job and began working with my hands, first doing siding and windows, and now installing home media systems. It has completely changed my work ethic, and my motto now is, “If you ain’t sweating, you ain’t working.”
My first woodworking “shop” was in the living room and kitchen of a run-down house trailer (2008-ish). Nothing pretty at all but it was functional. At that time I was living on my own with a job paying just over minimum wage. The engine in my truck blew a head gasket and the only option for me to rebuild the engine without going into debt was to sell off my woodshop. I sold everything but my miter saw. It was a hard lesson learned on being prepared with an emergency fund and I’ll never put myself in that kind of situation again.