I've had a Kindle for close to two years now. I purchased a hard cover/case thingy from E-Bay. The unit slides in and the cover opens and closes like a diary. You hold the unit just like you would a book so no more fumbling and dropping for me. A good friend on this board made me a tablet/e-reader fabric pouch that I just love. It's in bright colors so I can find the previously often misplaced Kindle, and also provides added protective when we travel. This cover is of her own design.
Also, the Vera Bradley product line has many different covers for electronic gizmos, along with their purses, wallets, etc.