I just had a new shower installed, meaning all the hangers and stuff glued to the walls were gone. Looking at that pristine, expen$ive shower wall made me not want to glue more things to it. So I decided to make an s-hook to hang off the grab bars in it. This is the result.

Works like a charm, but you may not want to use it. After I designed it, I realized I should have searched first. There's a much better s-hook available. It's much customizable. The only advantage mine has is that it uses a round bar instead of the popular square one, and the other round ones don't seem to be parameterized. If nothing else, they make an interesting study in contrasting techniques.