We see a lot of innovation around solar power but there are other sorts of renewable energy. Hydro power is one of them and now you can carry a whole power plant right in your backpack with the Blue Freedom Portable.
This is actually cool. It’s a tiny wheel that you toss into running water. The resulting kinetic energy can be used to charge your devices or run a camp light. It’s small enough that you can toss it in your pack and it works with all mobile devices, anything that has a USB charger. The downside is, you need running water.
This means that if you’re going somewhere there is no running water to be had in any direction, this isn’t going to help you and you’re better off sticking with solar power. Still, this is one more tool in your backpack of living off grid. You can order your own for €299.