You can also get the BioLite gear, looks pretty cool. I don't have one but we thought about it for charging smaller things such as cell phones and what not while off the grid.
http://www.bioliteenergy.com/products/energy-bundle
Before I knew these types of things existed, we bought two 6 volt batteries and put them in series to create a 12 volt system. We got a 1500 watt inverter off of Kijiji for like $40, the batteries were also off Kijiji (like new from costco), and a solar panel from CT, the 40 watt coleman for $95, wait until they are on sale for sure. We spent about $300 all together and they run great. We can run a small fridge, lights around the camp site and charge all our devices, the solar panel is good at keeping the batteries charged as well. So far we are pretty happy with them. We can easily get a weekend's worth of battery power.
If you want something convenient, it looks like the goal zero yeti is an awesome product, thanks for posting Bossy.