For my project, I wanted to do something with lasers after seeing this really cool video.
I have always loved tetris so I did some research and found out that you can make a tetris game with an arduino.
After watching these two videos, and many more, I think I want to build a tetris game, but instead of having my keyboard be the control I want to the lasers to be my controller. I would have 4 lasers, which would be in charge of moving the tetris piece left, right, down, and rotating. I know this is not this "educational" but it is something I have always wanted to do, work with lasers combined with my admiration with lasers.