I also have used bookmarkers that the children made in the library bookmarker contest. The school librarian runs a bookmarker creating contest for all grades, chooses one from each grade, has the winner's bookmark made into about a 100 bookmarkers, and then gives them to teachers, staff, and students. They are fun.
Just thought of and found my favorite bookmark from one of my favorite cities..... Barcelona....Portree is still my #1 favorite city. :)
Here is a photo of it. It is made of "tough" plastic. I got it in Barcelona when I visited.