Do you garden? Research shows that there are actually anti-depressant microbes in soil (you can read about that HERE). Getting outside, moving your body, doing something physical so you are out of your head, and tending to a plant are all positive things that can improve your overall mental health. You can read some more benefits HERE.
Your garden can simply be a bucket of dirt (on your patio/porch/wherever you have outdoor space) with a plant in it. No need to be fancy or “perfect.” Pick a plant (vegetable/herb/whatever you like best) and get outside!