Oh, see I thought this was a man on an island scenario.
I was gonna say my laptop bag with some clean underwear stuffed in it. Cuz undies you know...and laptop cuz I figure anything else I need I can search online once I arrive.
But yeah, if you're just looking for bag recommendations, the B&R expandable is good. I'm not gonna say it was the best $500 I ever spent. I'm cheap and that hurt to click purchase on, but it is a good product. If you're not gonna use it a lot, I'd probably spend 80-100 and get something cheaper.