Here's what I've been up to:
a small scorpion (just showing off the finished model)
a kangaroo designed by Peter Engel (Part 1 and Part 2)
"Blütenkreisel" designed by Carmen Sprung (octagon from a square and folding instructions)
a traditional butterfly
clarification on Lang's scorpion
clarification on how to curve paper with crimbs
a ground beetle by John Montroll (Part 1, Part 2, and Part 3)