Final answer:
The state fruit of Idaho is the huckleberry, which is associated with both a fictional character, Huckleberry Finn, and a cartoon character, Huckleberry Hound.
Step-by-step explanation:
The state fruit of Idaho is the huckleberry, which shares its name with Huckleberry "Huck" Finn, a character from Mark Twain's novel "The Adventures of Huckleberry Finn," and Huckleberry "Huck" Hound, a blue cartoon character. The name Huckleberry has become quite well-known due to its association with these popular culture figures.