Yep +1 for led desire light. And if you want the widget to turn the light on a brighter setting, you just have to open the actual program, select the higher setting, then close it with the brighter setting selected and it works when you hit the widget
just thought is share that.
And another cool trick, to video record at night with the light on, just turn the leds on with the widget hit the home button, then open the camera and switch to video
I couldn't figure out if you could do it with the stock camera app so I figured out this workaround : ) hit thanks if I helped!