The VR3 Phone Jack Powered Emergency Night Light and Charger is a device that plugs into your telephone jack and when fully powered, has an active light sensor that can be turned on and off automatically. It also has USB ports that you can use to charge your devices, albeit slowly. This device is great during power outages!
To note: the VR3 Phone Jack Powered Emergency Night Light and Charger will only work on a working COPPER telephone line since there is some voltage being sent along with the copper. However since copper telephone lines are starting to become less common now and days, you need to make sure that you do indeed have a copper phone line before picking up a device like this.