Solatubes

Solatubes are a great way to bring tons of daylight into an interior space that lacks natural lighting. Instead of burning overhead lighting for interior spaces, these let you bring in enough natural light to not have to use them. There are also options for dimmers, fans, and lights to use at night. They are inexpensive compared to a regular skylight and affects much less roof area, minimizing the risk of leaking.

Solatube. Maximize daylight and minimize lamp use with the Solatube Daylighting System. Two systems, the 160 DS and 290 DS, are designed to illuminate up to 200 square feet and 300 square feet, respectively, and are both Energy Star-rated.

(Via EcoHome: Most Read Product Reviews.)