Can also just take a walk. It's aimless, but still good for the mind.
It's because it's aimless that it's good for the mind. Or rather, good for you (because you are not the mind), because you get a break from your "crazy monkey mind"[1].
"You" meaning anyone who does it, not literally you, of course.
[1] https://en.m.wikipedia.org/wiki/Monkey_mind
Also see YouTube videos by Tibetan Buddhist monk Mingyur Rinpoche such as "Calming the Mind".
In that video he shares a great insight right near the start, which proves that everyone has awareness, even if they think they don't.
Watch "Mingyur Rinpoche ~ Calming the Mind: The Practice of Awareness Meditation" on YouTube:
https://youtu.be/dG5ywz8OGqo
Can also just take a walk. It's aimless, but still good for the mind.