I was an event photographer, best skilled at concerts, where the clients (musicians) were even poorer than photographers. I shot a few weddings which are more profitable, but disliked it; too stressful.

The closest I did to a long-term personal project was a 30-day photo book challenge, shooting pictures of walls. https://www.flickr.com/photos/funcrunch/albums/72157624575268552

ETA: Though I do still contribute photos to Wikimedia Commons: https://funcrunch.medium.com/visibility-and-resistance-on-wikipedia-in-fifteen-photos-5851e2cd7216