Global water relief nonprofit, Water Is Life, has created The Drinkable Book, which provides a portable water purification system in book form.

The Drinkable book is an actual tome about water that does exactly what it says. The books are printed on revolutionary filter paper that can kill off any of the world's far too common deadly waterborne diseases. Users tear out a page, which is coated with silver nanoparticles, and place it into the accompanying water box, like an especially helpful coffee filter.

The Drinkable Book reduces bacteria by over 99.99%, is very cheap to produce, and is capable of providing clean water for up to four years.
http://www.fastcocreate.com/3030020/heres-a-book-you-can-actually-drink-and-it-might-save-lives