OK, we admit it — this one may have made our list for selfish reasons. P.S. I Hate It Here! is a collection of 150 real letters from kids ages 8-16 to their parents, and it may be better suited to parents and tweens who long ago mastered the art of loving camp, rather than little ones. Buy it now anyway, stash your own kids' letters in the back, and in a few years, revisit the book and laugh yourselves into hysterics together.