I’m on the third iteration of my own, home-made solar backpack. I use the solar for my bike lights and now have two on my pack, one red flasher (about $5 or less) and another steady white light with a mini-USB power take-off so I could use it to charge my iPod or (dumb) cell phone (about $10) . It fits my purposes and is considerably more affordable than the Solgaard design.
This is an earlier version of my backpack from back in 2007:
That one cost about $45 and worked well too. I’ve had solar power on my backpack for over a decade at a fraction of the cost for the models being advertised. When is the rest of the world gonna catch up?
