It's always the 10!
I keep one in my center console, my keychain, and random cheapies mixed in around loose tools, on top of whatever is part of the sets. Periodically we'll still have a hard time finding one when its needed and have to replenish.
Are they hanging out with the lost socks?
I like Sleep as Android. I have had it for so many years though, I apologize that I cannot remember if it is part of the premium upgrade. Has tons of custom sleep and wake settings.
I am a light sleeper and really like that I can set it to just vibrate for a time. If that didn't wake me up it will start a random song and increase in volume.