It might be almost 100 degrees out here in San Antonio, but I'm almost always immersed in thinking about woolly, winter accessories. Wyder, shown here, is a prime example: a hat with extra-wide ribbing that can be cuffed a lot for a beanie length, or a little for a slouchy beanie.
The hat in rainbow colors is crocheted in a new-ish yarn by Lion Brand: Color Waves, an acrylic-wool blend. It's very soft and cozy.
The other two hats are all-wool: Lion Brand Fishermen's Wool in Oak Tweed and Bartlett 2-Ply Wool in Denim.