You can sell service about website maintenance. Maybe some website owner need to change something to make more improved.
Send me a PM, we can discuss what you're able to do with managing websites. I work for an SEO company and we're always looking for a bit of extra help managing our workload. Depending on your skills and abilities, we could maybe work out a position for you.
I guess that would depend a bit on what you mean by "managing"? Can you code? Can you use certain CMS? WordPress?.... Can you...