A yarn that I have come to love is Cascade 220 superwash. Unfortunately, I can't get it locally. But wool-thyme.com has reasonable shipping, so I ordered a swack of the stuff to make slipper socks. The pair I just finished are going to a former pastor who just lost his wife. I hope that they will keep his feet warm in the winter now that she is no longer able to. The pattern is from tropicalyarns.com. The cool thing is that if you're on Ravelry and find projects for this pattern, the featured pair is mine! These are really easy to make with 100 grams of worsted weight yarn, which is knit doubled, so they work up quickly.
Do you know why they call it "220"? It's because there are 220 yards in the 100 gram skein. It took me a while to figure that out.