So here's my 2nd attempt, made in Rowan Denim. I made the top flap a bit longer, to close over the earphone pocket and it still needs a button. It's a bit overcast here today, so the flash kept going off when I took this picture, so that's not great either. Ho-hum!
But here's the pattern, written for the 1st attempt in Sugar & Cream cotton.
I used size 4½mm dpn's and got a gauge of (approx.) 22st x 30 rows : 4".
Cast on 18 sts. Start with a purl row and work 18 rows of st.st. This forms the earphone pocket - add more rows to make a larger pocket if you like.
Cast on another 10 sts and distribute the 28 sts on 3 needles like this: 1st 4 sts on needle 1, next 10 sts on needle 2 (this will be the back), next 9 sts on needle 3, last 5 sts on needle 1.
Join and knit 30 rounds. You've just made the main body which will hold your ipod.
Cast off 14 sts : the last 7 on needle 3 and the 1st 7 on needle 1. You will be left with 2 sts on needle 1, 10 sts on needle 2 and 2 sts on needle 3.
Put these remaining 14 sts on one needle and work 11 rows st.st.
Next row: K6, cast off 2, K6
following row: P6, cast on 2, P6 (you just made the buttonhole).
Work 2 more rows St.st, then cast off. That's the closing flap finished.
Sew the bottom flap to the main body of the pouch to form the earphone pocket. Sew on a button to close the top pouch.
And there you have it, your very own ipod pouch.
Please let me know if the pattern is unclear or unworkable - I really haven't made a pattern up before. And I'd love to see a picture, if you use this pattern for yourself - please leave a link in the comments.