I'm amazed at the number of complaints regarding the Kindle case and the limited options for replacement. The majority of the discussion generally centers around the lack of ability to comfortably read with the device in the case. After a futile search for the ultimate case, I simply made my own.
While thousands have taken the razor and Velcro approach to the original case, the only objective reached is that the device no longer falls out. It remains uncomfortable to hold in a natural position while reading. Others have gravitated to the leather "not named" commercial case with pockets to hold stuff. The fact remains that although attractive and business like, it dosen't feel like a book, the device is losely supported by a flap, and there is no practical reason to store business cards in your book (extra pockets).
I took a different approach in making my own, that of holding a book comfortably in any position. I suggest the primary objective in hundreds of thousands of these devices purchased was to enhance the reading experience with limitless access to reading material. When considering an aftermarket cover, sleeve, or pouch reflect on why you purchased your Kindle. I predict that the market will eventually be flooded with expensive designer models that perfectly match your briefcase or shoes yet remain unnatural to hold and read.
Ask questions and try before you buy, don't let fashion override functionality. We have evolved to this point from stone tablets, papyrus, Microsoft Reader and become conditioned to comfortably holding a book in any position while reading.
I've attached a few pictures of covers I have either made for myself or friends simply to stimulate thought. I hope to eventually post instructions for self made covers on my web site. Enjoy.