Rachel knit this hat out of Cascade Lana D'oro (although it's modeled here by Amanda). It's a free pattern from the Cascade Website
and it just takes one skein of Lana d'Oro. The lana d'Oro is s super soft blend of 50% Alpaca and 50% Wool and it's available in a huge range of colors! She liked working with this yarn so much she is planning on knitting a sweater with it at some point.
Rachel found that the gauge on the pattern was actually off so when you see that it says 15 sts per 2' it's actually 15 sts per 4'. Other then that, it was a fun and quick knit!