I made this knitting needle case for my 29" circular knitting needles. I sort of made it up as I went along, but there are a lot of free tutorials available online.
I used a Global Voyager cotton (I think) fabric from Jo-Ann Fabrics for the outside and the pockets and red Country Classics quilting cotton for the inside. I interfaced the case to stiffen up the fabric a bit.
The case is 8" tall and 14.5" wide when open.