A great “earth friendly” way to draw in some natural light into just about any room is with a tubular skylight.
The collectors are mounted on the roof, and the light travels down a tube, the light being multiplied as it travels, then it is finished off in the ceiling with a fixture, much like a pot light.
The fixture can be controlled with a solar powered remote controlled shade/diffuser.
Eliminating the need for electricity.
I personally like these in bathrooms where there is generally a small window or no natural lighting.
The 10″ and 14″ collectors are completely water tight and simple to install on a shingle roof. They come with a limited lifetime warranty.

