SnapPower Guidelight Outlet Coverplate @ Bigbruin.com
 

The SnapPower Guidelight is a simple, but very smart solution to a situation many people may have. All of us have electric outlets, and many of us have nightlights, but now there is no need to lose an outlet because you have a nightlight. The automatic sensor only turns the nightlight on when it is dark, and I found that it works much better than other automatic nightlights that generally leave the nightlight on all day unless exposed to direct, bright light.

http://bigbruin.com/content/snap-guidelight_1