What's In Your Toolbox?

Most of what everyone has already said plus my DeWalt drill extra battery and all types of drill bits.

ratchet set, combo wrenches, screwdrivers, pliers, general tools like that.... spare bulbs, fuses, fittings, screws, oil, coolant, tranny fluid, distilled water....tapes, mix of misc fittings, wire terminals, dicor caulking & gun, silicone spray, rust penetrant, spray red grease, paper shop towels, nitrile gloves.. I like the TyVek suit idea.........

Never what I need..

I must be the last boy scout, i got alot in mine, complete wrench and rachet set, Screw gun and saw's all , Never know when a limb might need cut to get into a spot and easier than chain saw. All lubes , oil and tape, wire ties, volt meter/ohms meter flash light, I even have fitting and spare tubing for water leaks. Credit card and insurance policy covering towing and minor stuff , Radiator stop leak is a plus, I just returned from iowa to okla all the way when i started to leave at 1800 the thursday night before the holiday weekend, Radiator started leaking a good stream got to parts store got two tubes of stop leak and filled it up and made it over 500 miles home no problems... now to repair shop to fix it...

WD 40

well, nothing over a 1/2inch drive rachet, and that's a carbon fiber,one.now its all happy-camping

Not in the tool box itself but I always carry a couple of the tyvek coveralls that can be slipped on over my clothes if I have to crawl under the coach, or into the engine bay. These are cheap and available at Home depot.
I carry a bright reflective vest to slip on if I have to work on the coach at the side of the road.
I also have a set of the reflective triangles to put out on the highway if I am stuck on the side of the road.

How do you open the beer ?

I'm with Phil...that said, EVERY tool box should contain a volt meter and continuity tester. EVERYONE should also know how they WORK.......Dennis

BEER! In case I have to wait a long time for help.