"Must have's" for vandwelling

[Kaylee]

I was being facetious since it was posted in the thread more than once

Riot, I was about to nominate your for an award for Special Achievement in WordNerdage, but first checked, and Gunny was the first ever VD-er to post the word "facetious".
Figured that would delight all.

On topic...

Kettle
I generally don't drink hot stuff, but it's essential for hygiene (a warm water wash cloth IMO is often much better than baby wipes), and Thermos cooking.
(...and, of course, as an adhoc Bagel Press )

Lots of wash cloths.
Buy a 12-pack (at least), it's cheaper and you can spread them around your vehicle. I've often found that a single one really doesn't make me feel clean, but using two makes me feel human.
They're also much better than paper towels for non-tiny spills.
They hardly take up any room in your laundry bag, so splurge.

+1 to TrainChaser's can opener!
I have a full size clean-cut one, plus some tiny military jagged-edge cutters, plus a couple of Swiss Army Knives with can openers.