Seeing this bookrest from swissmiss, I burst into laughter. Lucky for those who like to read on the toilet, they no longer have to look around for a place to put their books when they pull down their pants, and they don't have to worry about getting their books wet in the bathroom. There's a hook underneath for your glasses, and, of course, for your phone if it has a lanyard.
What's more, this bookrest is also fairly simple to make, just a piece of it. Of course, with a little imagination, it can be even more powerful.