Nice!
For a home-rolled solution, I use a GE CYNC ST19 Edison Style bulb in a socket right outside my office door. I have it configured through Home Assistant (https://www.home-assistant.io/), and then use Hammerspoon (https://www.hammerspoon.org/) on my macbook to make an API call to Home Assistant when the camera state changes.
If my camera turns on/off, so does the light bulb. Works really well for letting my family know I'm busy in meetings.