Ace Hardware used to have a great little compact socket, ratchet and bit kit. Sometimes they have it, sometimes they don't. I have one in the bike, every car, garage and shed.
5 and 10 lb sledge. Somethings you just need to beat into submission.
Assorted lengths of steel pipe. Give me a lever and I will move the world.
Stainless screws and hardware. Assorted into plastic bins with dividers and little labels. Never rusts.
Micronta (Rat Shack) voltmeter. Required for chasing down those pesky electrons that seem to get away.
Cheapo battery tester. Saves getting the voltmeter out.
Sharpie. Now I know which gas can has the mix.
Bungee cords.
Acetone. Dissolve stuff alcohol won't.
Cheap one use brushes.
Bench grinder with wire wheel on one side.
Air compressor.
Sanding sticks. Work on my broken nails too.
Clear Coat and Red nail polish. Locktite and mark my stuff.
Heat shrink tubing.
Reusable cable ties.
Pocket knives.
Wire cutters.
Soldering gun.
Propane torch, with igniting mechanism.
Generator.
Mig or Tig welder, if I could afford it.
Cutting torch.
Bridgeport milling machine.
Still.
Chain fall/come-a-long.
Automatic cd buffer.
One remote to do absolutely everything.