Packing for the Unknown

As I wrote on the previous post, I am going on a trip to the Himalayan region.
Before big events the adrenaline flows. I'm always nervous as I pack. This time there are so so many questions and variables. And we're going to stay wet. Packing is not easy, because I need to travel light.

Besides the usual stuff, I need plenty of protein bars and beef jerky (don't know what we'll be eating), underwear and socks (I'm fine being wet and nasty everywhere else but not there), water filter, sleeping stuff (including measures to keep bedbugs at bay), all in a waterproof pack.
The most important way to prepare is spiritually. That's something that you can't do last minute.
Thanks to all for your prayers on our behalf.