Legend has it that when Archimedes made a discovery related to water displacement, he leapt out of a bath declaring, "Eureka!" Whether true or not, the tale serves as a symbol for the notion that a burst of inspiration can lead to an exciting new discovery. Most books about inventions, however, tell a different story. The path from the germ of an idea to a final product that people really use is actually filled with lots of hard work, plenty of trial and error, a bit of serendipity, and a surprising number of mistakes. The resonant image of creating something that the world has never seen before can be a compelling hook for young readers. In this article, the author presents selections that offer many possibilities for a different kind of "eureka" moment: the one that proclaims "I found...a great book!"