Another thing you can so is cast any web browser tab or even your entire desktop to the Hub display, works with chrome edge or I assume any other chrome based browser, although the location of the menu option varies.
I started using my old Kindle Fire 10 tablet in Show Mode placed next to my regular monitor when I got tired of moving my Rainmeter date and time OSD because no matter where I had it, it kept obscuring parts of the screen I needed to interact with. Now my screen is uncluttered, and the date and time are always readily visible -- plus Alexa.
I've been doing something like this for years. I have an old off-brand Android phablet in the center of my standing desk w/ multi-monitor setup. The time-out screen is a clock face, and I use it to run my work playlists and my scheduling/tracking platform. That way, I never have to interrupt a project to open YouTube Music or to track project hours. I'd recommend this to anyone who regularly works at a desk