JavoEdge Covers, also available via Amazon.com. Book & Flipcase styles; sturdy, with padding, full body covering, when closed the face of the Kindle will be protected.

I'm not sure if it'd protect it from accidental sitting on or dropping onto a hard/solid surface floor. But I can comfortably toss my device onto my bed, or a couch and am slowly moving away from paranoia about breakage, into carrying it in the case in a handbag or in a seperate (padded) section of a bookbag.