Portable, motion-detecting LED lights are an efficient way to light rooms at night for a few minutes. This portable light from Maxxima, turns on when you enter a room in the dark (similar to motion-detecting outdoor lights), then turns off after 30 seconds of non-motion. It runs on four AA batteries (we suggest using NIMH rechargeables), and should last about two years before the batteries need to be replaced.It has a light sensor to make sure it doesn't turn on during the day. These are useful in a on-suite bathroom or other places you venture in the house at night. It glows with a soft bluish light — enough illumination to complete a task. They can also be used as a reading lights, or during a power failure. These are priced around $15.