I collect bookmarks. I don't know anyone else who collects bookmarks. My oldest bookmark is the one I picked up at Yellowstone National Park when I was about 11 years old. It reads "Meet me Where We Parted Last" in blue ink that I printed when the words rubbed off.
I have several bookmarks with Bible verses on them, from various different kinds of religious episodes in my life (high school Bible camp, college, holy roller, etc.) I have a felt hand-made bookmark with all of the names of the third graders in my Sunday School class. They have to be really old now. I have two hand-made cloth bookmarks: the only things I could afford from an artists' colony in Jerome, Arizona. I have a couple of book marks with the initial "D" printed on them. I have a Mickey Mouse bookmark from Disneyland, bought on the memorable honeymoon trip with John's then 11 and 16-year-old sons.
Just the other day I read a quirky article in the paper about the odd things people use as booksmarks. Librarians say they have found drivers' licenses, Social Security cards, money, old pictures, love letters. Once a knife, with butter on it. And a condom (unused)(thankfullly).
I like my bookmarks better. And nobody else collects them, so there's no competition.