What is the ONE item that's on your "Must-have" fall shopping list?

Bags: grey, black, brown, red, and navy blue
Coats & Jackets: grey twill or tweed blazer
Capes & cloaks: any color
Vintage accessories: necklaces, rings, leather jackets, handbags, panchos etc..
Shoes: booties, flats, mary janes, peep-toe platforms, hunter wellie rain boots
Scarves: pashmina scarves (fall colors) & silk vintage scarves

ETA: Alot of this stuff I already have but I always want more....