Last foldable from my Student Project Display post... Below is the cell cycle foldable that students created while learning about mitosis. They really enjoyed this one. I think because it required a little less artistic work than the others, yet still left room for some decorative creativity (aka doodling).
Students were given a half sheet of paper with both the directions and a rubric, as well as 2 halves of a white 12" x 18" piece of construction paper, cut lengthwise. Then they went to work, doing their artsy magic. I've posted the direction and rubric handout here.
And that's it. Like I said, this foldable required less artistic work. Many students drew arrows between phases, created borders of chromosomes, etc. And it looks great displayed on a classroom wall!