Here's what you will need:
2 skeins of Wisdom Yarns Poems Sock, distributed by Universal Yarn. From personal experience, I do not recommend yarn substitution on this project. I got halfway through one sock and had to frog it three times while trying to use a substitute yarn. Even though I got gauge on a small swatch, the Poems Socks has a unique construction (a single with some mild thick-and-thin, much like handspun) that I haven't encountered in any other commercial yarn. Besides, it is scrumptious and not too pricey for the yardage (and the colors, swoon).
A 2.5 mm hook, or the size needed to obtain gauge (for me, that is 2.75 mm).
A row counter (to save your sanity).
A tape measure (for checking gauge).
A yarn needle (for weaving in ends).
A handful of stitch markers (the pattern calls for one, which is the only one that is necessary, but I recommend at least three per sock, unless you live in a world where you can count to 100 without being interrupted...).
The pattern, of course, which can be found in our Crochet Accessories 2010 Special Issue, available in the Interweave Store in either magazine (until it sells out—quick, snag one!) or digital form.