Just got a peak at IKEA's summer catalog, which includes a whole spread on affordable solar lighting. I have no idea of the quality of the lights or the solar panels, but it might be worth heading over to E-Ville to take a look. Product details are up on the IKEA website. You can search "solig" to see the full collection.
Lanterns, round or cylindrical
Has anyone seen these in person?
UPDATE: NotCot went on a Solig shopping spree. All the details, reviews, and a ton of photos here.
Images from IKEA