Well, I've been meaning show pictures of this for a while, but here's a sonobe dodecahedron I made out of a Tennessee state map:
It took quite a long time to make, but I'm really happy with it! You can see below that it's made of multiple, small pieces, which are made of smaller pieces, which are made of even smaller pieces (30 in total). Each of these is from a single square of paper, and are easy to fold, but take a long time to make in bulk. (If you want to learn how to make one, this
website is rather helpful)
As far as I can tell, they are basically the legos of origami. If you have enough, you can make some really cool stuff! (As in geometric birds and swords and fancy polyhedrons)
And it's also technically a "small triambic icosahedron" according to
Wikipedia, if any one really likes geometry.