My leather Kindle cover is getting a bit dirty going on year 2 so hunting around I found this:
http://www.chicaandjo.com/2009/09/03...le-cover-case/
I didn't have the chipboard and tried some foamcore. Tougher getting in because of the thickness though. And I would take her recommendation for cotton fabric next time too. What I used was too thick to be able to turn a small tube for covering the elastic so I just made a wider tube and used wider elastic.
Pretty easy and I can tell I will have a lot of these before long
:D