I probably found this blog through Twitter but I don't remember who posted the link that I followed originally. But I am so glad I found Forgotten Bookmarks.
As the site explains the material comes from things found in used books. It is interesting, and sometimes hilarious, to see what people use for bookmarks. And sometimes it can be really beautiful.
The posts are simple and short, but contain so much more for thought. The entries usually consist of a picture or two showing the book and the item found inside and then a short caption that quotes any text found on the 'forgotten bookmark.'
This is a great blog to keep track of if you love books, reading, or bookmarks.