Make widgets from your photo albums.
List widgets you have created. You create a widget from a photo album on your phone. It can be a regular album or a shared album.
You can choose to show a random photo in your widget. Widgets get refreshed approximately every 15 minutes.
If you want to show the same photo from a shared photo album, you can disable random order and everyone who makes a widget from that shared album will see the same photo at any given time.