My paper piercer is always in close reach when I’m working on a project.  I love how it makes placing a brad or adding some stitching a breeze.  One of my favorite uses for it is to separate the prongs on the back of a brad.  Just stick the point of the piercer between the prongs and press the tip down towards the center of the brad.  It saves your fingernails, and it helps the prongs to lay flat on the back of your project.