Not a mobile detailer, just do my own vehicles(2 large trucks and Jeep), some friends stuff, and our excavation equipment. But since i don't have a dedicated space for washing/detailing i've gotta keep everything organized and easy to store in the garage. The bag came from Cabela's and was on sale for $20-40, can't remember. The box came from Lowes, around $30.
In the bag i have 32oz bottles of D155, D156, D170, and small spray bottles of CG interior cleaner and Stoners Invisible glass. Also have 16oz bottles of Jet Seal, Colli 845, 2 different bottles of soap, and a sample bottle of wheel cleaner. Also have room for 3 foam tire applicators, 6 microfiber wax applicators, and some other random crap.
In the box i have my GG6, 12 5" pads, 4 6" pads, couple bottles of D151, bottles of Pinnacle compound and polish, bottle of Sonax cut & finish, pad cleaner, and some other crap.
Also have 3 plastic totes for microfiber towels, 2 smaller ones to keep my paint and interior/misc towels seperated, and a larger one for all the dirty stuff. Currently working on some shelving to keep all this stuff up out of the way in one spot.