Mine would be creating pen and paper ciphers for my made up secret communication needs.
5 points
Fiber arts! They’re for everyone, not just grandmas. Knitting, crochet, weaving, embroidery, sewing. The act of creating art lowers stress, and it really helps manage anxiety and depression. A lot of them also a mathematical or engineering approach, so if you find those things rewarding, you’ll probably enjoy fiber arts. And you get something warm or useful in the end…