Quote Originally Posted by mjf55 View Post
EDIT: maybe provide an off button so that the OS does not corrupt from a quick power removal (i.e. pull the plug)
I have bought power supplies with inline switch very close to the micro usb connector. they work very well. It is still a hard off I know, but at least it is using a switch. Here is a link to a random ebay ad of the type of power supplies similar to what I am using:

https://www.ebay.com/itm/5V-3A-Micro...sAAOSwhilZaWRV