A gentle light thats powered by your laptop what a bright idea the bright idea usb lightbulb is powered by your usb and gives off soft light thats just enough to distract your eyes from the screen if youre working in the dark atmospheric and actually a bit of fun this usb light bulb is a simple light bulb that sits on an flexible cable that can be manipulated to give the best position and better still it glows in the dark when its not in user r bright idea usb light bulbusb powered