Ooh I love Manos! I also love Rio de la Plata, which also carries similar yarn from Uruguay. I'm pretty sure Rio pays their spinners fair wage, and I think Manos too.
Anyway, Manos make great hats. I don't have a picture of the finished hat yet, but here is a pic of a hat in progress I knitted for my sister.
I've made 2 sets of the following scarf and gauntlet glove set. The first one I made was out of Rio de la Plata. This one here is Manos. The scarf takes 2 skeins. The gauntlets (elbow length) take 1 skein plus about 10 yds off a 2nd skein.
My friend also made a very beautiful variegated Manos scarf in a herringbone stitch, which shows off the colors so beautifully.
I agree with BlooCanoe and Clicksticks about felting Manos. I get a pain in my chest when I hear people say they felted something out of Manos.
Peachcake-- best of luck in selecting a wonderful project for your wonderful yarn!