Lots of things! I like to go for a bike ride, read, and work in my garden. I'm also learning to play the guitar (shoutout to Justin Guitar!). And weirdly, I find house cleaning really relaxing - I just throw on some classic rock or maybe a podcast and get into a cleaning groove!
It's a lot to keep track of at first, and it will make your fingers hurt. The learning curve to get to playing basic songs isn't too bad, but if you want to get good you need to put in a ton of time which is a lot easier to do if you enjoy it. If it feels like a slog, it'll be hard to make progress, but if you love it and find it relaxing/enjoyable then it can be incredibly rewarding. I'd definitely recommend getting a cheap guitar to dink around on before you pony up a bunch of money for anything fancy. Also get that cheap guitar set up properly at a shop, it makes a huge difference.
It's really fun! I get feeling intimidated but you don't have to feel that way. You can do it! The site I linked has super detailed lessons with an organized course structure and really well laid out practice guides, and it's free at the beginner levels. There's a good balance between learning concepts and techniques, and then applying them to playing songs. You start learning songs right away which is nice. The dude Justin who runs it is a seriously gifted teacher and his approach makes it really manageable. (Plus, if you're a lady, he's easy on the eyes which is nice!) 10/10 I highly recommend trying it!