Reading Ebooks in the Bathtub: Reading in the bath is actually what I like best about ebooks. Take one reader of choice, encase in ziploc freezer bag, read at will. Because you can press to turn pages, it works much better than a physical book. No more soggy spots from turning pages with damp fingers!
I have no idea whether this will work with an iPad, nor how long one could leave the bag immersed for without problems, but I will vouch for safety from splashes and one terrifying time when I dozed off and dunked it.