One of the cool things I did was add an exercise in order to fill up some space. So, what I did was add an exercise that will call for a photograph of a piece of origami paper and a completed origami model. I think I can convince people that we can shoot these in-house with my own foldings, so it would be pretty cool to see my own stuff end up in a math book, and it would also be cool to see an in-house photo shoot since I've never seen one of those.
I also managed to solve a problem that had been a real stickler for a while, and I even got a "good job" from the person in charge of the current chapter I'm working on.