while i haven't seen any graphics designated as "bookmarks" i'm sure you could get one. if you ask the DISigners for something more specific, i bet someone could help you. look around and when you see a graphic you would like to use on a bookmark...just ask. i'm sure if you ask nicely for something specific, these amazing designers will take care of you. don't give up!
I don't have any bookmarks yet but I was asked by my daughters teacher if I could make some. i will share what i come up with once i have completed some of them