New pen idea

well today i bought this pen at cvs that has a laser pointer and a led light in the back. And then i tried to think of a cool new pen idea and boom! What do you guys think of a pen that has some type of white out thing in the back end. It can be equipped with one of those little brushes for easy use. I figure that there might still be some people out there who still use white out, and there are plenty of others who would consider buying it if it was attached to a pen. Any other ideas or comments are always appreciated :)