It's difficult because this is a very small town of only 18 thousand people. No museums, no exciting events here and I don't have a car due to health problems. Last year I began walking in the local woods and enjoyed it a lot, it helped my anxiety and depression tremendously, but that's not an interesting topic for others.

I also began doing paint by numbers ad my new hobby- too boring too!
I am currently forcing myself to play the keyboard although I'm not that much into music either...
When I read, it's only about psychology- not suitable for small talk with adults at the shop and definitely not suitable for small talk with my young teen students.

I should force myself to watch some series that are popular nowadays or something like that...

My natural personality is extremely dull as I enjoy topics that almost no normal people are interested in- I used to like astronomy as a kid (not anymore), spirituality, philosophy, psychology and therapy... none of those is a suitable conversation topic. I guess the only "normal" hobby I have is cooking and healthy diet although I have some "alternative" opinions about healthy eating and I'm not interested in discussing that with strangers.
I have a cat and a spider, too. Maybe I could mention that with the kids. But I don't know... somehow nothing seems to me like others would be interested in... Nothing that happens in my life seems so important that I should share it with others. Or those things are so deep that they aren't suitable for discussion in professional relationships (things relating to my mental health etc).