A young boy is invited to the biggest, bestest party of all time, but he is told he must bring a hat.

"Louie the rat likes making useful things out of not-so-useful things. But none of the other rats seem to appreciate his crazy inventions, which often turn out to be not so useful after all. So when Louie notices his fellow rats wearing fancy, colorful hats -- huge hats that don't fit through doorways, heavy hats that are difficult to walk in, ridiculous hats that make it impossible to see -- Louie decides to make hats that are USEFUL. He makes wool...

Elephant wakes up in a grumpy mood, but a present on his doorstep--a hat--cheers him and he sets out to greet his neighbors who all, it seems, need hats of their own.

In this wordless picture book, follow Walrus on a happy-go-lucky spree through the big city, as he tries on different hats to disguise himself from the chasing zookeeper.

"Follows the journey of a pink hat that is swiped out of a knitting basket by a pesky kitten, blown into a tree by a strong wind, and used as a cozy blanket for a new baby, then finally makes its way onto the head of a young girl marching for women's equality"--

A little goose named Peedie tends to forget everything including where to find his lucky red baseball cap.

A little fish thinks he can get away with stealing a hat.

"Locker 37 at Hopewell Elementary has been helping fourth graders solve their problems for as long as anyone can remember. So when Riley Zimmerman needs help pulling off the most ridiculous and wonderful prank the school has ever seen, the magical Locker 37 provides her with an equally ridiculous and wonderful rainbow hat that can clone anything that wears it. But will a group of clones, an untrustworthy bully, and 10,000 Ping-Pong balls be enough...

After buying one outrageous hat after another in an attempt to keep up with the latest fashions set by his teasing animal friends, Harbet the dog learns that true happiness comes from being yourself.