Here’s an project from this past summer that is pretty cool if you missed it. Adafruit community member Paulo Sobrinho sent it in along with the question whether it might be possible “to implement such a cool solution with Raspberry Pi!”
The video was uploaded to YT last year, but it’s much, much older – I remember seeing this project (and the video) at least 5-6 years ago, and I had a crack (not so successfully) at making my own. Getting the mirrors mounted and aligned is hard! Although these days I could probably 3d print a mirror mount with all the angles set perfectly.