About the only thing I miss about paperback books is reading in the tub. I don't think there are any waterproof ereaders so this is not a shopping question.
I have considered using the text to speech of my kindle keyboard, but pretty sure I would be tempted to try and pause or change the volume or do something else stupid that gets it wet and kills it.
I have considered putting either my Paperwhite or keyboard in a gallon-size zip lock bag and trying to read through the bag. I have not tried reading through the bag, because if it works I would be tempted to jump in the tub and try it. Not sure if I am ready to pay the price of that experiment if it failed.
Are there any viable options for reading an ebook in a tub full of warm water?