Love my air tools, most of them being Toolex, including the compressor. I went for a big one, because I plan on doing several cars in my lifetime (I'm only 22, but the list includes many American muscle cars, I hope to do at least 1)
Toolex 1/4" Die Grinder - one of greatest investments, bout $50 - $60 for a little kit (the bit's are useless stone crap), and I paid $80 for a real nice burr bit, eats metal like no tomorrow!
https://ishop.gasweld.com.au/ishop/stock/item/534389
Toolex 3" Cut-Off Wheel - been great as a little grinder for cleaning little things like burrs on bolts, making bolts into taps and lots of other little jobs.
https://ishop.gasweld.com.au/ishop/stock/item/576144
Grip (I think it is) 1/2" Air ratchet - good little tool which I bought mainly to undo and make my work easier, got 1/2" because thats what my socket set is. Although I've done 99% of the mini with my 1/2" set, a 3/8" & 1/4" would be beneficial as well. In which case I'd get a 3/8" Stubby air ratchet.
Grip HVLP Spraygun (anadized blue with alloy paint res.) - Awesome spraygun (my first) but comes with 2.0mm and 1.4mm tips and all bits needed to sway, and was about $100, its been a great investment.
Toolex 15S Compressor - 58L tank, 15cfm. Its been great!
https://ishop.gasweld.com.au/ishop/stock/item/535018
Air blower - one of the most used accessories! Dust off anything and prep for paint! (And make wheel bearings spin really really fast!

)
Edit:
Also got a supercheap Random Orbital sander, has been awesome as well, cept if oiled with a couple of drops it tends to oil your project as well after some heavy use.
And my next tool will probably be a rattle gun, undo'ing like never before!
