Oldie but goodie here, the Finger Print bookmark is a simple rubber band with a hand with a pointed finger sticking out sideways. Why? So you can place it right where you left off on the page, and not spend that extra 10 seconds trying to remember. Remembering is hard, kids. Spend $7 for a single rubber band to do it for you. Makes sense.
Yeah, by the way, the price is just for one band, and only one comes in the package, despite images seeming to suggest otherwise.