If you have a laptop, why not charge it up on your way to the office?
The latest in solar powered gear is the Voltaic Generator, a laptop bag which comes in different color schemes.
Allegedly this is the first solar bag which is powerful enough to charge your laptop, using high efficiency solar cells. Not only does it charge your laptop, but it can also charge your mobile phone and other hand-held electronics.
Even the fabric of this bag is made from recycled soda bottles, which makes the surface brilliantly tough and water resistant.