What to post between comic updates

This is the time to remember the "social" in social media

It was an innocent enough comment. A beginner cartoonist was lamenting their social media results: "Now that I'm publishing my comic, I'm a little restless between the weekly updates, wondering if there's more I can do to market it. I don't think there's much I can do at the moment largely, beyond sharing on social media on update day and responding to comments."