The magnet that holds our shower door closed got weak. Instead of replacing it, designed this which slides over the handle and keeps the door closed tightly while in the shower.

I have a right and left door configuration in print profile along with small sample piece that be printed fast to test that works on your door before printing the full thing. I matched the filement color in profile to what my picture is too so if your door is configured like mine it is the one in red.