I joined the Yarn of the Month club a few months back, and it’s been great. $6.95 a month, and they send four small samples of a wide variety of yans each month. Enough to knit up a small swatch. It always arrives promptly, and there have been some very interesting yarns I would never get a chance to try otherwise. I use it as an opportunity to try out different stitch patterns. Oh, and a free pattern every month, too.