Fine cables at the top drip down and gather into increasingly deeper cables at the brim of this simple toque, something like how a river grows and grows as it moves down the mountains.

Knit in the round, from the bottom up. This toque is pretty easy as long as you know how to knit, purl, and do a basic cable.
The instructions are both written out line by line, and there is a chart that you can use instead.

This pattern is also available on Knit Picks.