Car wash kit. You can buy them as a kit or pick and choose to put one together yourself.
Buckets (1 soap 1 rinse), wash mitts, wash soap, wax/polish, spray quick detailer, good microfiber cloths, applicator pads, drying towels, interior wipes, good glass cleaner, maybe even a foam cannon if she washes often.


experience is a freakin' awesome teacher....