I was making a few bookmark designs today and I just thought that I should share them with you. All you have to do is download them, print them, cut them, then stick them into your books. It's up to you to decide what paper to print them on, but I've tried printing them on photo paper, both the glossy and the matte kind, and they've been pretty good for me (plus, the size is just right). You could also laminate them for durability or put some string at the top like regular bookmarks.
I hope you like them! Enjoy! :)
(PS If you know Pugly Pixel, you'd probably recognize the second bookmark's layout. It's based on this one.)
{Image & Image Design (c) Hannah G.}