More or less all of the things listed here go into my flight bag (including spare socks, pants, and toothbrush just in case
). There are a few extras that were added after further training and ratings but not important to begin with.
I'll disagree with Big G up top. Having a 'Flight Case' keeps things orderly, and easier to lump about as a oner. You don't have to purchase cases that wouldn't look out of place in the over-sized pile of baggage at Heathrow like airline drivers. It's not a willy-waving competition either, it's whatever works for you. I think mine is about the size of gym holdall and costed ~£35 so not expensive. I've also seem some people with a very organised laptop case that was deep enough to fit in a headset.
(Little) G