Crochet. I'm 36 and have just started drum lessons, which I love, even though it's hard and I don't have natural rhythm. I've always wanted to learn and was inspired when my DS (aged 8) started learning last year. He's really good. And now we have a full sized kit at home, so why not. Plus he loves helping me when I get stuck.
I play poker once a week in a league. We play for points and a few times a year those in our pub league with the highest points go to Regional finals and then the top 7 finishers from there go to Nationals. I made it to Nationals in 2011 when pregnant with DS1, then took a break because, family. I got back into it a few months ago and I love it. Going to Regionals again in a couple of weeks.
Up until last summer, running and the gym, but a dodgy knee has put a stop to that for the time being. I try it out on occasion, but usually about two miles in, it starts screaming again so I need to stop. It's been a year, hurry up and heal.
I love active things like climbing and hiking, bit don't do then enough to count as a hobby, more an interest that I do when the opportunity arises.