No, I don't carry anything with me except keys to home, things tend to get broken or lost when I ride.
Also it is always wet, these days dark and wet, it is only 3 minutes to where trails start, so I can always limp back home, hopefully.
Now if I could find a friend to go ride with, it would make more sense to have photo sessions, but when all riding is alone, only camera I have with me is action camera and that is usually mounted to bike or helmet.
Also when I ride, I'm usually at race mode, trying to break records, so not much chance of getting photos.