UPDATE: Added a short version as well, in both diffused and non-diffused. Take your pick.
I like the hat tiling pattern, so of course I'm putting it on here.
Two versions are included. The normal one is fully see-through, and the other has .5mm of material at the back of the hats. This extra material can be used to add some diffusion, if you feel like it. If you do, print those layers in something like a "natural" (un-dyed) PLA, anything that shines light through well. No need for fancy multi-material if you're fine with a stripe along the side.
The author remixed this model.
Added the pattern.