Being around my yarn after so many months away from it has seriously restored my knitting mojo. I finished the first Waving Lace sock last night, and immediately cast on for a different sock: Kai-Mei (rav link), from Cookie A's Sock Innovation. I've had this glorious green sock yarn in my stash for about two years, and inspiration struck last night. I did a long-tail cast on, which looks awesome with ribbing! I prefer the cable cast-on for lacy cuffs, but it gives a really clean, stretchy edge for ribbed cuffs. Now I just have to knit 6.5 inches of 3x3 ribbing before getting to the fun part.
And, in defense of my casting on another sock before the second Waving Lace sock, I've found that I get tension issues if I knit a pair of socks right in a row - after memorizing the construction, my gauge loosens up and makes for a sock that doesn't fit quite the same as the other. See? Totally not even second sock syndrome at all.