This year, I participated in something called "Sock Madness." This is a competitive knitting event, very loosely based off of March Madness - there are seven elimination rounds, and participants are sorted into teams or leagues. All of the patterns for the socks are sent to the participants by email, and as soon as the pattern "drops," it is a flurry of knitting to be earn a spot to advance.
The first round is a qualifying round - you simply have to knit a pair of socks in two weeks. The socks were called "Slip Stripe Spiral," and relied predominately on slip-stitches and two contrasting skeins of yarn. I completed them using Black Cascade Heritage yarn, as well as my Black Squirrel Yarn, from the Kickstarter for the Black Squirrel Fabric and Yarn Shop.