I made this headband last night for a friend. She had requested a headband with a huge bow, because she is IN LOVE with her bows. It is very reminiscent of the retro turbans from the 40's/50's era to me.
I used an I crochet hook, and did a basic treble crochet, double crochet pattern to give it some pretty pattern and depth. Sewed a button on the back and voila! It was a breeze to make!