I moved into a house and was delighted to find there was a sink next to the washer/dryer hookups, but was disappointed to find no towel rack. Searching around on Amazon and Walmart, I was flabbergasted by how expensive basic hand towel rings were. But then methought, I own a 3D printer; I'll just design and print one. So I did.

A bit rudimentary in its design, but sufficient. I've been using it for years now.

I have it secured to drywall using these:

https://www.amazon.com/gp/product/B07DL9MVN7/

but any old screws that fit through the holes would be fine.