Disclaimer: It's only been tested on a few selected devices, every device has it's own implementation of the LED Flashlight, so it might work for most people but some might experience the LED shutting off when turning off the screen or not being able to use it at all. The widget is provided as is, if it doesn't work I'm sorry but I've done my best to support multiple devices.
To install, just add the widget to one of your homescreens. It will display the Ghost icon so you can move the widget to it's desired location with long-press. After the first click/touch on it, it will go invisible.
Tags: ghost icon.
-- Version 1.1.0
When first placing the widget you will see the Ghost Icon, this to easily move/resize the widget in place. After you click it for the first time it will go invisible and enable the LED toggling.