So this is actually a Substance Designer project that is 2 years old now which I never finished haha and then lost the file to. I decided I wanted to at least post the WIP screenshots that I still had left of it on here.
(Inspired by true events)
The shower drain holes can easily change shape, count, layout, and size. As well as the entire drain itself can be moved around rotated and placed anywhere on the tiles which will then naturally integrate into the tile system. Water drop count, size, and hair color/size as well are adjustable parameters. It was still fun and now I am finally sharing it :) Enjoy!