I want to have something similar to a google’s nest hub to display different type of information, like weather, bus times, my own services information, photo gallery, etc.

It’s not a problem if I have to manually write plugins for custom integrations.
It’ll be better if it’s meant to be shown in a web browser.

I remember there were some related to a screen for a digital mirror, or a kiosk screen, but I can’t find a good one to selfhost and extends to my needs.

The ones I’ve found are focused on showing stats of deployed services and quick links to them.