The easiest square yet is based on Hermione's Everyday Socks by Erica Lueder.
Other than purling the plain knit rounds, no modifications were necessary for this extra-simple pattern, which only requires the ability to count to four. Cast on 38 (32-stitch pattern plus 3-stitch border), knit three rows of garter, knit pattern until it seemed like the right size, knit three more rows of garter, boom.
This Sockghan thing is going so well that I don't really have anything to worry about here. So I've moved on to obsessing about something else.
Which books should I take?!