Wasabi came from my desire to have a hat that was simple-to-knit, lightweight for the approaching windy spring weather, and easily modified. A few quick swatches and a not-so-quick bout of unknitting and re-knitting the crown decreases (it had to be just right, after all) produced this basic hat with a rhythmic design.
One hank of Alpaca Sox is enough to make three hats. A few easy but not-so-subtle changes can add variety and keep your knitting interesting if you choose to make more than one. Try a k2tog at each of the knit columns to make them gently spiral for the crown decreases. Or, keep it simple and work the section above the ribbing entirely in reverse stockinette stitch. A deeper or shallower 2 x 2 rib at the base would also alter the look (keep in mind, the more ribbing you work, the more yarn each hat will take).