If you're still on the lookout for a solar bag of some sort, this new backpack is perfect for gadget lovers. It features several different pockets that would be great for organizing your smaller gadgets.
The O-Range Travel Bag has a spot for your laptop, and then several smaller pockets for your other gadgets. It also has a nice little zip pouch that would be good to toss your power cords in.
The solar panel like all panels has a small battery that charges up and will be available even on cloudy days. Of course if you attempt to charge it on a cloudy day it's going to take a little while longer. To snag your own it will cost you € 240,00 or about $360.