Desktop Whomp Rocket Repair Nose and Tail

My kid loves his little rocket launcher. He launchers those little rockets everywhere. And I invariably step on them. When I step on them either the nose or tail often breaks off. These are spare nose and tail sections that slip over the body of an existing rocket.

Why not just print more rockets? Why go through the hassle of printing and gluing parts? Will these alter the flight characteristics of the rockets? These are all good questions for which I have no answers.