For reading the fine print. We used to work in an office where our boss kept one of these sitting out on an open dictionary. And he actually used it...

It wasn't just a paper weight for him, but a tool he used around the office whenever he needed to consult his dictionary or decipher an old architectural drawing. We love it because of its elemental quality: simply a piece of glass shaped properly to aid in vision. Available at Stacks and Stacks for about $20.