Some hikers take a luxury item or two regardless of the weight penalty. For me, a tiny ham radio, my phone (Droid X) and my iPod are always with me. They’re non-negotiable. Reread my trail name if you have any questions.
Why do I consider these as essentials? I hardly ever listen to music during the day, but when the desire for music hits, you just can't beat the real thing. And the iPod has excellent battery life. As for the Droid, its multipurpose role is for 1) FM radio (built in) 2) eBooks & Bibles, 3) navigation if needed, 4) weather radar and finally, 5) emergency phone call if needed. Battery life is terrible, so I take the battery completely out of it. Some people place it in airplane mode, but it still uses a fair amount of power in that mode. The ham radio? I find it entertaining to listen to the park rangers, fire crews, hunters, boy scout troops, etc. Occasionally another ham. Its like a teddy bear. I NEVER, EVER leave home without it. Never!
Finally, how about powering all this stuff? I have adaptors that will take 1 set of 4 AA's and use them to power the ham radio, the phone or the iPod until I am able to recharge. I run the internal battery until its low, and then plug the power pack in to recharge or just to provide immediate power. It can be used to power almost anything with a little forethought. And when the AA’s are low, just replace them in the next town. If you really want to push the weight issue, remember that the power pack can replace the AC adaptor(s) for any rechargeable that you might be carrying already.
The power pack can also be to used to extort money or supplies from other hikers with dead electronics... A definite weight advantage for me I think.
Well, this is what I can't do without. I'll skimp on food before I leave these behind. How about you?