8) Cluster rib:
I really love using cotton for these swatches so that I can use them as dishcloths, and in general, I am a big fan of cotton, but it just isn't as nice to knit with as wool or even acrylic. Cotton doesn't have the stretch and give that other fibers do, so I have to be careful to knit loosely or else I get frustrated, especially when trying to slip stitches over others.
