Anybody know of any good hand and wrist stretches or exercises for artists to strengthen your grip and/or like relax the muscles and tendons? Or even massage I can do on myself? :/

Any time I've tried to look things up all I end up finding are like drawing practice instructions, I just can't seem to get the search terms right to get myself useful results, and when I do find the odd thing that seems on the topic it's obscure as fuck and dubiously advisable, like "old dude from a fishing village shows you how!" on some website that looks like it was made back in the early 90's and I'm just like... uhm.... what?

Just wondering if anybody has any techniques that help ease their wrist pain that they've found? Or sites where I could find useful info? I KNOW there has to be something I just can't seem to find anything useful... hahaha....

(Also totally off that topic but relevant to an earlier one I'm almost completely over the con plague I caught at Megaplex so yay! :D )