Wire brush 'n Detol....
Isoprop Alcohol or Lighter Fluid, 0000 Wire Wool, Duraglit Autosol and and a dremel mop, Jim D Lemon Oil, Dab of Warwick Guitar Wax or furniture bees type wax... takes care of the fretboard n frets... Castrol Motorcycle Polish or Mr Sheen for painted bodies... what i got to hand... Dab of Warwick Guitar Wax or furniture bees type wax on oil finished bodies... Autosol on metal work, then Vaseline or Sewing Machine / Clipper oil on machine head and bridge threads... Micro fiber cloths 'n cotton buds... and a tin of that spray air duster....