TrendyDigital WaterGuard Plus Waterproof Case with Padding for the Nook eBook Reader from Barnes & Noble, Blue
A friend recommended this case so that I could use my nook in the bathtub, by the pool, and at the beach.  Another reviewer suggested doing a \\"paper towel\\" test, which I did upon receiving the case.  After testing the \\"waterproofness\\" of the case by submerging it with a paper towel inside with the towel remaining competely dry, I felt confident for it to protect my nook.  It's great to continue reading a book even if I'm close to water, sand, etc.