There seems to be no end of interesting and innovative renewably-powered gadgets coming on the market these days, some more affordable and useful than others. But they all have one thing in common: making it easier for you to power-up your various portable electronic devices on the go with clean energy, like solar energy, kinetic energy, and even doggie-powered energy!

Take the Scosche solBAT II for instance. It’s a solar charger that hooks up to most portable devices using a USB connection. It has a 1500mAh capacity battery with a 5-volt output. You can hook it to your backpack, hang it from your car window with a suction mount, or just put it on your desk. Wherever you put it, just be sure to leave it where it will get direct sunlight. You can charge up the onboard battery within about five hours (after an initial charge that takes 4-5 days). And the best part is that it is only $30.

Then there’s the new Neon Green solar bag. Now, we know that there are a ton of solar bags around these days, but this company has put together a wide range of styles and shapes so that there’s something for almost any renewable energy enthusiast looking for a new bag. From the Piggy Back Soular Back-Up Pack (attach it to your existing backpack), to the full-sized Centurian backpack, to the Big Piggy (for powering up gadgets), they’ve got all kinds of options.

And finally, check out Fido Fashions’ doggie-powered LED leash. It works by gathering energy as the leash coils and uncoils inside of the device. The energy gathered is then used to power three high-intensity LED lights that shine down to light-up your way as you walk your pooch. There’s also an LED light that projects upwards to illuminate your car or front door so that you don’t have to fumble with the keys. And for added convenience, the leash casing has a compartment for doggie waste bags. So check out these new power-saving gadgets and let us know what you think!