Basic setups (restringing, adjust action, pickups height, intonation)
Guitar cleaned/polished
Frets polished
Fretboard cleaned & oiled
Attempt to repair scratchy pots and switches
Etc.
If you need basic guitar service, I may be able to help. I've done about 50 such setups like the above. I'm not a professional luthier but I can do the basics for you if you don't have time.