Tessellation Open Back Hexes Both Sides
What I like best about it is that it's versatile. You can create several different tessellations from this one crease pattern.
It's open back hexes connected by triangles. The triangles actually follow the folds of the classic grid.
I have a sketch that I need to upload. (Update: crease pattern image added below)
The hexes alternate directions. Some are exclusively on the back. Some totally on the front. Others go both ways.
The triangles are all 2 mountain and 1 valley.
I haven't explored it in great detail, but I did play around with the arrangements a little bit. It's pretty versatile.
Different patterns emerge depending on how to decide your valleys and mountains.
There's a flow to the mountains and valleys of the hexes and the triangles. It's symbiotic. They do have to work together in certain ways.
Here is a simple single module illustration of the collapse.
In the bottom right corner, the right side of that triangle is a valley. It doesn't look that way, but it is.