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There are many stylish crochet hat patterns even though knit hats are slightly stretchy for a better fit. A crochet rib stitch worked vertically along the rim will add a little stretch.
My favorite crochet hat of all the ones I've made is from a pattern in The Weekend Crafter: Crochet: 20 Simple and Stylish Designs to Wear and has a matching crochet scarf.
It's made of several yarns, including chenille, boucle, and an alpaca and silk blend. The scarf is wide so I wear it draped down to cover me sort of like a vest.
There are several different styles and special needs for hats. Here are some different types of hats:
Which style looks best on you?
Here's a picture of a little Santa Claus hat I crocheted for my dog. Unfortunately, she decided it would be fun to chew.
The photo of her chewing the hat was featured on the family Christmas card that year!
If you're making anything that could be chewed by a pet or small child, remember to stay away from buttons and sew everything well so it's very sturdy.
Hats are a great way to use special yarn. Show off your handspun where everyone can see it!
Stick to simple crochet stitches if using a multicolored yarn.
If you want to show off fancy stitching, use a plain solid color yarn.