Months ago, I made this hat, and completely forgot to post it on here:
Blue and Yellow Hat by ~audreydc1983 on deviantART
It's big, soft, and has tons of room inside for my hair. (and it has my first puff ball, by the way!)
Unfortunately, I can't remember what yarn I crocheted this hat out of, although I'm 99% sure that it's Lion Brand Homespun yarn, both yellow and blue.
Most of my crochet hats turn out looking something like 'Rasta' hats, because I like the versatility - meaning, if I have a bad hair day, I can take my icky hair and stuff it up under the hat.
This was done in sc, in rounds, with an H hook.