How to backlight your keyboard?

Light up from behind the keys with leds.
look at these examples

Comments

[Plasmana]

Here is an instructable and a video how to make one.

http://www.instructables.com/id/Illuminated-Keyboard-Hack/

[UziMonkey]

First, find a USB keyboard you want to modify. It helps if it has translucent keys, as the effect looks cooler. Next, identify which pins on the board are +5v and ground. It being a USB keyboard is important, as USB can provide enough current to drive the LEDs. Then, strategically place a few LEDs around the keyboard. It'll probably have to be below the membrane, so you'll have to drill hole in any plastic behind that. Free-form soldering can be used to solder resistors in series with the LEDs.