The people that made these icons were subtly or overtly creative, perhaps even deliberately going for laughs.
1. The environmentalist's version of this classic
2. There's no need to get abusive
3. William F.'s brother writes yet another book with the theme of 'a writer writing about his writing life'
4. We claim him as Irish
5. Should be pronounced with a fake French accent
6. A book about a nerd milking cows? Sounds boring.
7. A 5-book series about a dork running a dairy? Overkill!
8. Why are we using the Spanish title?
9. The maker of this icon has apparently only read "The Diving Bell" but not "The Butterfly"
10. "From the Mixed Up Files" of Whom? - surprisingly the most commonly used icon for this book (duh, you don't have to use the first icon).
11. How old-fashioned! Why should I use a book's actual title & author for its List Challenges icon?!?
12. Martin Heidigger - the love child of Heidi and basketball coach Richard "Digger" Phelps?