This is how I made this hat in as simplest terms as I can make it. In true crocheter fashion I didn’t do a gauge swatch. My hope is that you can adjust this to fit any size yarn. Just use the corresponding straight and circular needles (or dpn I suppose) for your yarn. I will of course list what I used.

Straight needles US 10/6.00mm
16″ Circular needles US 10/6.00mm
Optional crochet hook J/6.00mm
Cable needle
Darning needle
#5 Bulky yarn (I used I Love This Chunky! yarn I found at Hobby Lobby. I bought 2 skeins and each skein has 109 yards. I had a decent amount leftover and honestly I don’t know if I would buy that again. The yarn got fuzzy just working with it and after the first wash… more than I would think appropriate. I did take a picture of the leftover amount to show.)
Very cute button