Once upon a time I saw a woman knit two socks at a time on circular needles. I was envious. So I went and bought these:
But the woman at the yarn store told me that one skein would not be enough. Because I'm cheap and yarn is expensive, I decided to stripe it with a blue yarn I already had at home. I was a little disappointed in the end because it gave the socks a darker colour than what I was hoping for and I have enough yarn left that I could have done the main body with just the grey. I guess I'll just have to make another pair!