I made two of these - one for me and one for my daughter, just before we went to Switzerland this summer. They made up pretty easily and were robust and effective, as well as looking good.
The link is:
http://www.chicaandjo.com/2009/09/03...le-cover-case/
I used a fat quarter, and joined it half way down. This gave me a piece longer than the instructions specified, but I used the extra to make a pocket for a pencil or piece of dowelling. I found this helped it stand up more successfully.
I modified the pattern a bit, made it bigger, and made one for my sister's Ipad. I don't have a photo of that, but it looks similar to the one in the picture, but just bigger!
Hope you find a pattern that suits you.