I’ve done a video before about how I’m using my Stream Decks (I even bought a second one) for so many different things.
I’m using about 20 different pages at the moment and can quickly move between them to fire up regularly used apps, including my notes manager with specific notes, run updates, be alerted of events from Home Assistant, open certain reference web pages, quite a few of my games, change mouse profiles, etc.
The power really comes with unlimited pages that you can customise, and the ability to show status or feedback on each button.
See https://www.xda-developers.com/10-non-stream-things-to-use-a-stream-deck-for