Obviously all of this amazing activity is about things going on here at the Friendship Centers. If you're not in this area check for your own local resources. For example, I grew up in Cleveland. A quick look at Google and searching for "Senior Center Cleveland" gave me a whole set of organizations to call. A second search using "Council on Aging Cleveland" gave me more.
Within "Council on Aging Cleveland" the "Western Reserve Area on Aging" site came up. Within that site I found a whole collection of local aging websites in northeast Ohio. Wherever you're located, there's a good chance for some great resources in your area to get more involved in hobbies, activities, events and volunteer work in your community.