This is a set of two hooks to fit a 10mm thick glass shower wall, to hang something like a loofah, sponge, or pouf. It is tight-fitting. After looking and trying to print a few different ones here, I found that none of them met my criteria, so I designed my own.

You will need to use supports regardless of orientation. There is a 10mm bridge if you choose to print upright, and this method would decrease the height of small supports. Given the the bridge is hidden, this may be the best choice if your printer can handle it. Otherwise, you may prefer to print upside down with taller supports.