I used the leftover bits to make baby socks:
This was a kit Akasha gave me, since the colors weren't to her taste. The pattern was one of the most challenging I've done (not definition 1. easily messed up, but 2. pat-with-one-hand, rub-with-the-other intriguing/interesting). The yarn was super-comfy, and the shaping - particularly the arch shaping - made for an incredibly comfy sock. So I tried the same pattern in some Koigu from my stash:
You can see how far I got with that. More on that sock attempt later.
And finally, proof that KD's socks were knitted on vacation (thanks, Stewart!):