Include a decorative bookmark with a special book or a gift certificate to a favorite book store.
I have custom book clips (that can be custom ordered) that will conveniently save a page in a favorite book, while reminding your special someone of you.
Book clips slide onto the edge of a page, similar to a paper clip. Book thongs dangle from a soft corded bookmark that won't dent the pages of your book.
Both styles can be customized with any color beads that highlight special charms or words representing your special someone's interests. Inspirational words are very popular (love, live, believe, dance, dream, etc.) and, of course, first names always make a nice personalized gift.
For examples, visit my online store at http://www.acornaccessories.com/