I was looking for a covery for my sony as well. As I would have to get it shipped from the US again (should have bought one when I got the reader

) I didn't want to go down that route.
I found this thread and really liked ardeegee's idea. Unfortunately on the way to the goodwill shop I had in mind I passed a bookstore (can't resist to get now updates on the latest books) that sold notebooks with absolute beautiful covers. I just had to have one . Cost AUD25. Now I have to 'fix' it i.e. get the paper out, add velcro and some padding
But I will keep the idea in mind and might make up a few more. Or just buy a cover and save the crafting time for more reading