I learned how to make cables a few weeks ago, testing a pattern for a designer. This hat was improvised one afternoon at work, and there are a couple rows I'd do differently (if I'd written anything down) but I wanted to share. I think crochet cables are every bit as cool as knit ones, and far less traumatic if you have to rip back.
Sport weight yarn with an E hook. There are 12 repeats of the... motif? segments? I dunno. I should have increased the row before the cables crossed each other so it wouldn't pull so much, but now I know