I posted about Z's Harry Potter scarf here. Now I've finished A's Ravenclaw scarf. Cute, eh?
The matching hat is a Coronet -- the pattern can be found here. I adjusted it a bit smaller for her little head. (I did 13 pattern repeats on the cable, picked up 72 stitches, and knit 6 inches before starting the decreases -- although if I were to do it again, I would probably only knit 5 1/2).