So...you have a digital camera, have time on your hands, don't know what to do with your camera, but still want to take pictures. There is a website,
www.findagrave.com, that has cemetery listings. One of the things you can do is add photos of cemeteries and/or tombstones to the database. So look up your favorite cemetery, make sure no one's photographed it all already, then go start shooting. Generally, something screensize is all that's needed, 640x480 or whatever.
The way the site works is that burial records are put in there only when someone adds them. So you may have a cemetery with 10,000 graves and the site will show "3 burials" for that cemetery, meaning no one's put in the other 9,997...yet. If a burial is already in the database, you can add a photo to it; if not, you add the burial first, then the photo.
I've hunted up three or four little cemeteries in my area that I didn't know existed. One of them had a headstone from 1854 or so, probably one of the older ones in the county.
There are other assorted websites with cemetery and other genealogical information as well, but I like the way this one is organized.