From The New York Times:

The recent shock of a pre-Halloween winter storm has left many people without power. Next time, those in the dark may want to check out a new product called Mr. Beams – a wireless emergency light kit intended to protect you in the case of a power failure. A small remote control/flashlight plugs into any spare outlet and monitors the power. When the power lines go down, the remote signals for the other Mr. Beams devices in the house to light up, thereby giving you a few hours of bright LED light while you wait for the end of the ice storm. Read the fully story here.