I like the re-purposing of the fire hose/standpipe cabinet. Not too-deep, so it saves space, but deep-enough to hold parts jars/fastener containers.
The pipe clamp rack makes good use of space. I found some maybe 12" long cast-iron loops that are made as storage brackets, they have plates on the end for a pair of screws. I placed them in the floor joist bays of my garage loft floor and set the pipe clamps on them (pic #5).
I also use the HFT plastic bins approx. 6" W X 12" deep for misc. parts, two fit side by side in the same floor joist bays of the garage loft (pic #4). Labelled to make searching easier, though they're grouped by use, i.e., electrical, fasteners, plumbing, straps, etc. I fastened a piece of masonite to the bottoms of the garage loft floor joists to make a 'floor' for the HFT translucent bins to rest-upon. Since there isn't any real heavy weight, the masonite is fine. Originally I was going to use plywood to replace the masonite, but there isn't any need to. I had a lot of the masonite, and this allowed me to make-use of it. I ripped it 2 ft wide by 8 ft long, and positioned it with one foot of the width on either side of the floor joist blocking, so I have space for bins on either side of the floor joist blocking.
Here's what I did with the wasted space between the garage doors. From the top, I have one of my Liftmaster remote control luminaires hung-from the garage door strut at the top of the stack, the light from it washes out the fixture in the pic, but that's what's there. The Liftmaster luminaires I have on motion detectors at either point of entry into the garage, from the house, or from a raised garage door (pic #1).
Below that, I made a simple plywood bracket set for the legs of my cherry-picker, as that's not something I need to use often, and this keeps it off the floor where it won't be victim to the winter snow slush and salt-encrusted wheelwell 'boogers' of snow that fall-off the car in the garage (kidding! I live in south Florida) if the legs were just lying on the floor. There's a re-purposed manual fire bell from an old Miami-Dade County FL public school hanging from the top wood steel pipe retaining piece. It's what my 5 y.o. grandson gleefully-refers to as the "Pizza Bell." When he comes-over to visit, he reaches-up and pulls the lever to ring-it, announcing his wishes for the next meal to be a pizza pie.
I threw a 2x4 block below that to hang whatever on it, currently it's holding a chain and a junction box, with a double-duplex 120 V outlet array by it.
You can also see at the top of the column, I have a 4 ft. shop light hung-off the garage door struts, which provides me some decent light for the floor drill press beneath it.
I also used the garage door struts to support some 1X4's mounted as beams to provide mounting points for an array of 4 ft LED shop lamps, below the garage doors, when the doors are raised. This provides good lighting whether the garage doors are open or closed. They're switched on the between-garage doors narrow wall where the cherry picker arms live (pics #2, 3).
My shop space is a small 2-car, so I've tried to use otherwise unused space for storage.