Just pull the handle and the lamp will light up for up to two minutes (won't kill your battery if you forget to turn it off).
A widget is also available to quickly turn on the lamp.
Find the source code at http://github.com/gautier/timedlamp
Tags: timed lamp, lamppu, lamp onoff source code in, light with timer, timer lamp, lamp, light bulb turns on and off in source code, luminosity and lamp life, bulb timer, lamppu indir.
Fixed luminosity bugs when exiting.