Models!
I also have a collection of crane variants.
A kanji made of just horizontal and vertical rectangles
A weave based on the herringbone tessellation
A 4-pointed star with 45° angles
Illustrating rasterization with origami
A basketweave with 3 strips in parallel
The 10 digits, made with a color change
A 3D-intensive tower inspired by the one in Whomp's Fortress
A rectangular design with some shaping involved