It could be something crazy or something you don't see enough in books or whatever you want. Serious or not. Personally something I'd like is to hear a theme song when I open a book. Now I know it's silly as hell but I'm serious. My favorite show is the X-Files and the most memorable thing (other than Molder of course) is the theme song and I always love hearing it whenever I go to watch a new episode. Now what if that was the same with a book? I sure would read more just to hear a silly neat tune. Just my two cents.