I use home assistant with a smart bulb. I had it setup to scrape my Teams availability but cyber security didn’t like that so currently I just toggle a switch on my phone in home assistant that changes the color of a light in the hall. Still want to automate it somehow but it works ok. I may try to her home assistant to detect when my headphones are on and use that to trigger the light or just replicate my work calendar and then use it as a trigger.