hahahahahaha....
Okay just had to get that out there because I can't even fathom running out of photos.
Really though, maybe scrap less than decent pictures? I do that all the time. I don't care if the photo is not great, I'm telling a story. I like Michi's heritage idea. If you have anyone who's gotten married and is willing to share photos, that can be a great source, especially with all the love and Valentine's Day goodies. I'm using a lot of that to scrap my best friend's wedding from last year. One thing I love to do is "Then and Now" types of pages. You can recycle pictures you might have already scrapped, and seeing how people and relationships have changed is so fun. Maybe try some photo-less LO's. You can easily put a journaling card in a photo spot in a template. Tell some stories from your childhood that don't have photos, or use a "representative" photo to tell a story. (That's the only time I'd personally use a stock photo) One more thing you can do is browse the gallery or pinterest and take notes on stories that inspire you, then go out and take new pictures. Or try a P365 project. That will give you lots of new material.
*edit-
And looking through your gallery, I see you ARE doing PL so yay for that! One thing you'll notice while doing that kind of project is different themes will pop up. You can do extra pages on those themes, like recipes, relationships within your family, the weather where you live, etc.