Do you work with a specific community or organization, or just take opportunities as they come up?
What type of volunteer work do you like to do? Do you like the stuff where you are just a warm body - someone to hold a sign or greet people? Or more involved tasks that are more like professional work? What about shudders door knocking?
I started out fostering cats (mostly kittens) a few years ago. I switched to a different organization a little while back, and started also volunteering for a variety of administrative tasks in addition to fostering. I love the cats, but would like to get more regular in person human interaction.