My first design, so go easy on me. I'm sure there are a lot of things I could have done better.
Wanted to try a reasonably complex design, so I made this retrowave style fan grill. it is 140mm, and I'm not sure how it will scale down, but I've included a one piece file, and all the individual pieces for printing it in different colours and gluing together.
The land, city, and sky are all different layer heights so if you could print it in multi colours from the one-piece file, if you fancy trying.
That said it does look great in one colour, especially if you have led fans behind it. The different heights of the model make some parts darker than others.
Depending on how thick you print this, your infill could show through, if the material is translucent, so you may want to take that into consideration!
Printed on the ender 2, except for the outer frame which I printed on the Creator Pro, but would probably print fine on the ender.