The evolution of pens has come a long way from quill pens used in ancient times. Early pens included quill pens made of feathers until the 1800s when metal nibs were developed. The modern ballpoint pen was invented in the 1940s. Since then, pen technology has advanced with the introduction of rollerball pens, felt-tip pens, pens with rubber grips, and now high-tech pens that include features like flash drives, laser pointers, and MP3 players. Pens have been improved over time to write more smoothly, be easier to use, and lower manufacturing costs to increase accessibility.