These are readily available. I visited a place once where they had one of these in every cubicle, and it was synced with whatever your current status on Lync (nowadays called MS Teams) was.
Note that most of the staff absolutely hated it.
Note that most of the staff absolutely hated it.
to be clear, I suggested this for me to help me.
For extra fun times, the owner of the company tended to just ignore everyone else's red and yellow lights, and he kept working in an office with a door that he closed.