I read with pens and carry them wherever i go.
Ever since I was about 10 years old, I have carried a pen wherever I go. If I don't, I feel like I've lost something and I have to grab one or else I freak out (I even induced a panic attack once).
Also, when I read books or online or even watch a movie with subtitles, I need a pen. I flip the pen in my hand so I follow the words and if I don't read this way I feel like I'm going to explode or something. I feel like I don't understand what I just read even though I did, unless I am holding a pen.