Kindle just came out with a waterproof model called the Waterfi that lets you read in the bath, but for those who prefer to flip the pages of a real book, there's You-Bumi.
You-Bumi is like an inflatable plastic cover that you can put a book in to keep it from accidentally falling in the water when you're soaking in the tub or standing in the shower. To use the You-Bumi Waterproof Book Cover Bath Bag, there are two small slots for your thumbs, so that you can get a good grip on the book and still flip through the pages. To keep the ink and pages from getting all wet and blotchy, the finger slots are plastic-covered too, so that there's no chance that a book will get wet.
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