I tried 2 different brightness level widgets but they didn't seem to work properly. If I chose a level, it said it was set at, say, 25%, but didn't actually go to that level until I opened the brightness setting. I didn't have to DO anything with the brightness setting, just opening it made it go to whatever I had set with the widget. Didn't seem any easier that just adjusting in the settings. Have you had luck with a widget?