"'Book on Book' is a transparent paperweight that holds down the pages of a novel. It keeps the pages from flipping and allows the user to eat, drink, or sit back while reading."
Bonus! Wards off tears of rage and joy...
Sweat from tense palms gripping the pages too hard...
And maybe vomit if the novel is so good it's punching you in the face with it's awesomeness.
Basically:
