Ok. Aside from your usual screwdrivers and wrenches (metric and imperial BTW)...
Cleaning compound for metal parts. Something that won't damage chrome and gold plating. I've heard of Naptha, but I haven't been able to find it locally.
Not just for metal - it's a good, safe heavy cleaner for finishes and pickguards too. Easiest way to get it is packaged as lighter/Zippo fluid from any supermarket cigarette counter or tobacconist.
Nut files
These are pricey, but well worth it. Get from Stewmac or Luthier's Mercantile. As with any file, get quality and they pay for themselves over time. I initially bought a set of Ibanez and then replaced with Stewmac ones as needed. If you're doing a lot of nut cutting, it is not unusual to go through a set at least every year.
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http://Good lubricating oil for bridges, tremolos & tuners.[/img]
Never use lubricating oils - they are non-drying and can cause other problems with finishing and gluing. Penetrating (Q20) for stripping bridges and saddles (when the bridge is off the guitar), but you clean it off completely before reassembly. Usually any precision parts like tuners or screws that need lubrication should rather be replaced. In the rare instances where you cannot replace, use a grease instead and as little as you can get away with - basically apply and then remove all the excess.
A good soldering station
You can get those locally. RS Electronics or Yebo.
Fret dressing tool (Some say you can make your own)
You can (I always used to make my own dressing and recrowning files), but the commercial ones make the job quicker and easier. I'd say fret dressing is something you work your way up to - it's a bit beyond setup. It's more than a single tool too - you need tools for levelling, recrowning and polishing. A set of radiused sanding blocks (the double sided ones from LMII are great), sticky sandpaper in 120 and 220 grits, a medium/wide recrowning file, fret protectors for recrowning and polishing, and a variety of grits of water paper .
Other essentials:
Cyanoacrylate (Super) glue - (the good stuff, not your supermarket or street corner stuff) both thin and gap filling. It's always useful to have a few syringes and dropsticks (toothpicks?) for application too.
Acetone - to remove yourself from the above ?
Steel wool - 0000
Blades for scraping
Dremel - the single most useful tool you will ever own for guitar work. Anything from cleaning and polishing all the way up to light routing jobs.
A few grits of polishes
Lots of cleaning and polishing cloth
Have I forgotten anything?
