The SSF (Sustainable Style Foundation) pointed us in the direction of this solar charger for iPods and cellphones.
The Soldius1 will charge your item in two to three hours using the power of the sun. The design is small and slim, making it portable.
In addition to making your music and calls "zero energy" you can pick your favorite color: It's available in white, black, PINK, green, blue and red.
Available at earthtech for $109.99 (currently includes 10 free iTunes downloads with purchase).