This day and age we want to take our mobile electronics with us everywhere. And, honestly, sometimes having that cellphone or GPS unit could be the difference between life and death. Well, Solio has the Rocksta portable solar charger that may fit the bill.
The handy clip form of the Rocksta allows you to attach it to a backpack, your belt, etc. It can do direct charging via solar or you can use the internal battery. Now, the internal battery is simply not big enough to do any full charging. But it’s good in a pinch. The Rocksta is water resistant but not waterproof. Remember that! Here’s a decent short video: