We live in an age where we have amazing handheld devices that are as tiny as they are useful. But when the batteries run out, you’ve got an extremely expensive paperweight on your hands.
Sure, you can plug your device into a wall outlet to charge it, but that’s boring.
Why not try one of these esoteric ways to bring your phone or MP3 player back to life?
If you're out camping, you're going to start a campfire. And you're probably going to wish you had a way to charge your phone. With this adaptor from TES, your campfire can charge your phone.
Price: not yet for sale
The idea behind the PowerPeg is simple -- keep it in your backpack while you're hiking. It will actually use the constant jostling motion to generate electricity. By the end of your hike, you'll be able to give your phone a decent charge.
It's easy to attach a hub dynamo to your bicycle. As your wheel spins, you can generate electricity to power a light for riding at night, or store the energy in compatible battery like the Biologic ReeCharge.
Price: hub dynamos vary in price, the ReeCharge costs $120