Ladders
Trad gear
Swivels
Rinse bar
Flow controllers
Manual reels
Cheap poles
Rhino hose
25l barrels
Vision and other additives
Trolley
Safety cones
Expensive gloves (they all leak or tear)
Gutter vac
Pressure washers
Carpet cleaner
Generator
My window cleaning kit these days is simple,
Tank, pump, battery, electric reel, extreme poles, extreme brushes. And a backpack just in case.
Only other thing I carry on the van are tools, spares, waterproofs and some cheap all purpose cleaner and cream cleaner.