"Origami Tessellations" by Eric Gjerde

Some time ago I started this tessellation, and didn't have time to finish it. I'd only done the grid and the first rabbit-ear triangle sink fold. I had a hard time figuring out how to do that one. Today I decided to complete it, and thankfully I immediately got how to do the rabbit-ear triangle sink fold, and after some fiddling this is the result. The pictures shows the model from both sides. Given the name, I'd say the right one is the front view, and also the side I think I prefer. But with tessellations you can always decide which side you like best.

This model is still listed as one of the beginner's projects, but I did find it a bit more challenging than the previous ones. Also, I first folded it with transparent paper, and I didn't like the effect as much. And then there remains the question - which is back, and which is front? I prefer this side of the model, for a front view check https://www.flickr.com/photos/30755467@N04/3284221806/.

Paper: 19.5cm square of stiff paper, 115gsm

Update: I was made aware of the fact that Ron Resch discovered this origami tessellation before Eric Gjerde. I have updated the list of designers accordingly.

This model somewhat reminds me of a hedgehog. It's basically a tessellation consisting of many small waterbomb bases.

Paper: 19.5cm square of stiff paper, 115gsm
Model: 11cm x 11cm x 1cm when pressed flat

I was really intrigued by this model, because of its 3-d finish. Apart from having seen faces and such formed from tessellations, I had really associated tessellations with being essentially flat. Another surprise was that you first have to fold spread hexagons, and that model then very easily transforms into the star puff.

Paper: 19.5cm square of transparent paper
Model: 4.1cm x 12.2cm x 0.8cm