Something I like to do a lot is playing tetris lol. I play Cultris 2, it actually also has some pretty cool music as a "soundtrack", but recently I've been turning all of its sound off and just playing tetris in "training" mode. My mind goes on autopilot on the tetris game and I am somehow able to focus a lot more on the music, and at the same time to occasionally space out on it and focus on clearing lines, I find it overall very relaxing and I really like to do it after a long day or just to unwind before going to sleep. It took getting somewhat good at tetris though, so I wouldn't recommend unless you're already into it lol