Power off the screen widget WITHOUT root.
So my big gripe with the M8 was always having to hit the power button to turn the screen off - and I hate the power button location. It's hard to hit.
I was told to root the device, install gravity box so I can double tap the status bar and turn the screen off.
Thanks to a recommendation by jadaress1, this app fixes the problem entirely:
Screen Off and Lock: Screen Off and Lock
I put an icon right next to where my thumb rests on the main screen. A quick tap turns it right off without any reaching needed at all. What a lifesaver.