Dont forget the ladies. Tampons and other things that guys dont want to buy in the store.
And Porn.....a guy gotta have a stash of porn{ Just kidding}.
Clorox bleach....
Wax
Building supplies
Guns...and ammo...and when you think you have enough ammo, buy more.
Books. Or a fully-stuffed E-reader, with several SD-Cards full of OTHER books. And at least 2 solar chargers for the Ebooks. . . .
Hand-tools. A manually-driven hand drill (the old crank-type) will be invaluable, as will good screwdrivers, a good socket set (both English and Metric), and a multi-tip screwdriver with a good set of various bits. Bunch of Vice-Grips. Good handsaws and hacksaws. Hatchet, full-size Axe, and a Splitting Maul. Shovels. Pick.
I could go on. . . .