Office Supply biology has a certain karma to it - apparently the paper clip swarm that devoured the letter opener unknowingly ingested toxic residue from the envelope adhesive used on millions of household bills. Half of the swarm was left dying. Taking advantage of this situation, the rare stapleworm finds that paper clip carcasses are the best place to lay its eggs.
Another interesting chapter to this theme and very well done too. That ten year old in your mind is quite the imaginative one. Hope this doesn't only last a week, go for two please. ;)