Hats!
We all wear them. They protect your dome and make a statement. These do both well and comfortably.
I just got in a small batch of hats. These are made by Kuhl and are their Strand Cap. Probably the most comfortable thing you can put on your head. $35 shipped, less if you're local. I don't have many so if you're interested in getting one let me know! Khaki and Dark Brown available.
EDIT: All hats are spoken for but I will place another order soon. Contact me if you'd like one. I don't think the khaki hats will be available as they've changed the styling and color a little but I can get the dark brown reliably.