Nice Hat/Myth, Legend and Folklore

Odin had a wide-brimmed hat along with his cloak whenever he went out for a stroll or to impregnate Jotun women and so on.
- Mercury/Hermes from Graeco-Roman myth also has a hat like this. It may be partly this dress choice (along with the common interest in poetry) that led the Romans and Germanic peoples to identify Woden/Odin/Wotan with Mercury, on the face of it a rather odd match.
- Since Mat Cauthon from the Wheel of Time is an Odin Expy, he gains a really nice wide-brimmed hat in The Shadow Rising that he wears constantly even in battle.
- Similarly, Gandalf from Tolkien's works had his appearance directly based off of Odin, complete with the iconic traveler's hat. This is where the popular image of a wizard wearing robes and having a wide-brimmed pointy hat come from.
- Also in the wide-brimmed-hat club is Ankou, the Breton version of The Grim Reaper. Doesn't get much more awesome than that.
Santa Claus' hat is basically synonymous with Christmas.
The voodoo god Papa Legba (a.k.a. Baron Samedi) is traditionally shown wearing a Nice Top Hat (as shown here).