I used to love going to salsa socials although I recently swapped this for weekly online chair yoga/dance classes. There's a small fee to pay and they are organised through a private group for people with similar health issues to me, but the classes were fun to do.
For the sake of my sanity I also practice meditation as often as I can. I used to enjoy attending local classes face to face whenever I could but the pandemic put a stop it. In fact I've only recently started using a meditation app on my phone. I stumbled across the app through an email subscription I've received for years and never bothered with but a video on it caught my eye and has opened up a whole new world of possibilities to me. I now prefer the app to 'real' classes because as well as saving me money it also allows me to meditate in the comfort of my own home.
In addition, we love trips to local beaches, or the woods in good weather. We take a big bag of bird seed with us. It's become a cheap new hobby to go bird feeding if that's even a thing?! It's a great way to get children, young and old, engaged in something that benefits wildlife and is rewarding to do. We all get so excited to see the birds flock around us while we scatter seed for them. There are some lovely parks with ponds a short car ride away. One of them has a model railway ride which is very popular with families. There's no charge but a donation is welcomed. Never too old to enjoy a ride on it but having a grandchild to ride with, makes it all the more worthwhile.