First, I'm intrigued by the fairly simple design. I took the panel, and separated out a single triangle, then printed a few of those and stitched them together. Fairly straight forward.
As I was doing it, I thought, 'hay, it would be nice to have a few different kinds of pieces'. A kit that contained triangles, squares, hexagons, and pentagons would be great, to enable making just about any shape. Also, have alternatives like multiple eye holes, 2 instead of 1, and even all 3, might be good for being able to come up with different topologies. I might design those.
The ultimate would be a piece of software that takes a pattern your trying to make, and tells you how many of which kinds of pieces to print.
I printed in PLA+ at .15mm height, on an Original Prusa i3 mk2, and they're good.
At this small size, infill doesn't really matter as the shells dominate. If you scale up, probably 100% infill would be alright. Printing in a flexi material might be good, but not really required.