One of my 
bloggy world friends is doing a really awesome give-away from her blog 
Kim's Keepings, she makes these awesome Book Bands, that are way better than book marks, which for me always fall out  because well since I'm clutzy I drop my books 95% of the time thus loosing my place, so a book band would work for me :) And for all the other book worms I know! So go check her out 
HERE and sign up for the give away!