When I was in college, I often marked the book I read with a pen instead of using bookmark. Because most of the time, I needed to make some notes in the book. Steve Yang has come up with new Bookmarkpen design. It is a compressible pen that can be transformed into a bookmark instantly. While in bookmark mode, this product is compact enough that virtually won’t add any thickness/bulkiness to your book. When you need to create some notes, comments, or write down anything, just grab Bookmarkpen, fold the 3D shaped into a pen.
Designer : Steve Yang Che-Hsiao
i've been using flat bookmark/pens for about 10 years now. extremely flat yet somehow comfortable to grip.
you can buy em in hong kong for like 10 cents per.