Check out the new range of solar bags from Mascotte Industrial Associates of Hong Kong, where it will rely on DSSC (Dye-Sensitized Solar Cells) technology to make sure that your bag is able to store converted solar power in its internal battery so that you can later juice up thirsty gadgets at your very own time. Our own experience tells us that such solar panels aren't exactly that effective, and you'd do best with a power outlet nearby. Still, some sunlight is always better than none, right?

The Sun Drive keychain is very different from most other keychains since this model sports a USB solar charger that allows you to juice up a range of USB-powered devices on-the-go. Even though it is small in size, it is still able to offer up to 35 hours of juice for most portable devices, or roughly the equivalent of 100 minutes of talk time on your cellphone. Apart from that, it can carry vital information within thanks to a choice of 2GB, 4GB, 8GB and 16GB capacity within. Prices start from a surprisingly affordable $23 a pop.

So you own an iPhone, and want to make sure it remains in pristine condition most of the time through everyday travels. What do you do then? Get the Smart Cover, as this special charging case offers your iPhone or compatible iPod the ability to gain extra bits of juice on your travels for free thanks to a built-in solar panel behind. When fully charged, it supposedly dispenses up to 390 hours of standby time and 9.5 hours of talk time. Apart from that, even your notebooks can benefit since it has a USB port that will transfer power from the Smart Cover to your notebook. Expect to pick up the highly versatile Smart Cover for $139.99.

The Mavizen TTX02 electric motorbike has been described as a “laptop on wheels”, where it is the first electric motorbike of its kind that incorporates Wi-Fi connectivity alongside an on-board web interface to get you started. It will be limited in production for one reason, offering potential participants a chance to acquire a bike where they can develop themselves in order to make it competitive and unique to them. The Mavizen TTX02 will rely on a rolling chassis of an FIM homologated and road legal bike. Production will be limited to just 50 units, where the Mavizen TTX02 is expected to arrive at your doorstep sometime in Q1 from next year onwards. The estimated retail price for a complete bike with a Circuit Pack? £25,000.

While there have been concepts of blinds that also function as a solar-powered window air conditioner, the Briz takes a slightly different route as it relies on water as a coolant. Precious water will run through both tubes located beneath the bottom part of the blinds, helping emit dry mist in the process. Whenever water evaporates, it will absorb the heat and cools down the surroundings naturally. This is but a concept at the moment, but won't it be cool to have something like this roll off a production line somewhere?

Gordon Murray, an ex-McLaren Formula One designer has come up with a trio of prototypes of his T.27 electric car that will cater for city or town use. Interestingly enough, the T.25 (its predecessor) tips the scales at a mere 600kg, which is half the weight of a small family car on average. The T.27 comes with a tubular frame to absorb energy and does well to pass all relevant safety tests in case you were wondering. Just a thought though - it can hit 60 miles per hour, but what happens when a really large truck overtakes it, will the T.27's relative lightness cause it to swerve or skid?

Worldwide installation of wind farms could be delayed or abandoned as objections have been raised from the aviation community or air defense interests. The main reason behind these objections concern low flying aircraft or wind turbines, where conventional radar can't tell the difference between either. The solution? Development of "stealth" turbine technology that might just do the trick. The integration of stealth technology into towers and nacelles as well as blades could potentially enable small remaining radar presence to be factored out of air traffic and air defense systems, essentially turning wind farms invisible to radar.

Is there no end to the many uses of a USB port? Apparently so, with the USB Eco Button being the latest device to hit the market. Made up of a green plastic button, pressing it will turn your Windows-powered machine into an energy-saving ecomode, where the included software will help monitor and record your power usage alongside the amount of money and CO2 that the button has helped you save. No idea on how long it will take to recoup the $14 asking price for this, and is the manufacturing process of the USB Eco Button green to begin with? We also do wonder about the performance hit you will take with your computer running in ecomode.

The recent World Solar Challenge saw the Japanese team emerge as winners, upsetting the pecking order that was once dominated by 4-time Dutch champs. They took top spot by making it past the finish line of the 1,864-mile solar car race that was held across Australia, completing the gruelling journey in 29 hours and 49 minutes even on a flat tire, giving it an impressive average speed of around 63mph.

Solar seems to be as much the in thing these days as with multitouch displays, and the Neuber Energy Sun Bag carries just one of those. It will feature a huge solar cell on the front flap which will help soak up the sun's rays during the day and turn it into something useful, making it capable of juicing up tiny handheld devices of up to 5 volts. Perfect for customization buffs, the Neuber Energy Sun-Bag will have a choice of 37 colors in addition to optional custom printing. It has been priced at $150 with no word on availability just yet.

In the perfect world, the public transport system is flawless and caters to just about anyone and everyone wherever they are going. Too bad the world is full of imperfections, which would mean ideas like the Carpool LED sign could be the next best thing to consider. All you need to do is place it atop your vehicle and let people know just how many more spaces are available in your set of wheels. Don't worry about its power source - the Carpool LED sign will rely on wind power to keep its innards juice up.

iPod docks are dime a dozen, but how many of them are actually green and good for the environment? The Reverb solar-powered iPod dock from Regen is one of them, where it is capable of offering up to a dozen hours of continuous playback on a full charge. Charging is much slower compared to plugging it into a power outlet of course, where it will take 20 hours of outdoor sun to hit a full charge while indoor sun will take up double the length of time. For those who crank up the volume on a frequent basis, the Reverb will last for a mere 4.5 hours. Features include a stylish 35" iPod tower, a backlit LCD display and an integrated photovoltaic panel. It won't come cheap though, retailing for $2,299 but at least after the apocalypse, you can still tune in to your iPod when there is no power supplied through the grid.

The Savior Bud is a pretty simple concept that will harness the power of the trees' natural recycling processes in order to obtain water by latching onto leaves, collecting their moisture while emptying the precious content into containers. Could be a lifesaver in countries such as Africa, but unfortunately that doesn't look too likely at the moment as we wonder about the practicality of its yield.

Check out the 90 Degree Charger concept which requires you to rotate the plug manually before the electric circuit is completed, similar to what you do with a timer. Whenever the gizmo connected to it is filled to the maximum, the plug-point will return to its standard position in order to break the circuit and prevent any wastage of electricity. Wonder when will something like this hit the market though.