Hmmm. That seems like a lot of devices. My current kit.
1. Smartphone, with ultralight headset and USB cable. For short trips, a MintyBoost and possibly a tiny wall charger. For longer trips, I'm contemplating getting a NewTrent charger.
2. Camera that runs on AA batteries. I don't want to use just the smartphone, because I really want optical zoom. Sometimes a lightweight tripod.
3. Wristwatch
4. Headlamp, one set of spare AAA batteries.
5. AA batteries as needed. They power both camera and MintyBoost.
I could save further weight - and not use a NewTrent, which at half a pound is a lot to tote - by carrying additional cellphone batteries. But my phone lives in an Otter Box, and needs to: butterfingers here has dropped it on rock multiple times. The OtterBox is tricky to open, and isn't designed for repeated opening, eventually the snap fingers (or the slots that engage them) crack.
A keyboard like Gadget's sounds great for writing on the trail, but I'm not willing to spend another half pound just to be able to type. Otherwise I'd grab the Jorno when it comes out.
The phone does the job of MP3 player, GPS, digital voice recorder, spare camera, ebook reader, and several other things. Once in a great while I even call or text someone.
Anyone know a good solution for transferring pictures from camera to phone? Do Samsung phones recognize SD cards on USB-OTG out of the box?