I found these Cookbook Markers on Pinterest. I liked how simple they were and figured they could be adapted for the library. (My middle schoolers still love free bookmarks.) I printed them out, laminated the page, and gave them a test drive. I actually do like using them with cookbooks, but they worked well for notebooks, and regular books as well. They're so simple that we made a template and just printed them out on scrapbook paper. They're a bit easy to lose but the kids like them a lot.
You can find the Craft and Creativity's free printable HERE. (Swedish and English versions available.)