Just recently, both my cell phone and my Palm got wet, and both were lost.  In this age of electronics this has happened to many people.  Some people have tried simple solutions, but divers have to deal with this problem all the time (we are always around wet things).  One of the best ways to keep things dry is the use of a Pelican box.  I have used them for travel, and to keep my camera equipment dry.  Also I store my save-a-dive kit in a Pelican box.  There are a few other companies which also make waterproof containers which you can check out, such a Aquapac, Otterbox, and even Amazon which sell many different types of waterproof cases.  Using a waterproof case can save many a headache, whether diving or not.

Thanks to Gizmodo and Kevin Kelly