Be on the lookout for classes that don't cost money! I have had success with that-- although I am usually one of the youngest people in the class since 'free' is popular with retired folk These kinds of classes are often connected with volunteering in some way. I did a 3 month local history course in exchange for a 20 hour volunteer commitment.

My mother has done an adult cooking class and enjoyed it. It sounds like a very social class. I keep eyeballing a pottery course, but it's expensive and I am not very crafty.