Photographs, taking them, viewing them. There are over nine thousand pictures on my hard drive. I took almost all of them. I just finished going through all my old photo albums and scanning the special ones. There's 624 in that file alone, and I scanned less than 1/4. It was an emotional experience. Some of those pictures are 40 years old. Some of them could easily be magazine covers or calendar shots. Most are just snapshots, but of HUGE sentimental value.
Thanks for asking.