What Medium?

Colored pencils are not pens and whatever they are made of doesn't rub off like graphite does. So, I got out my trusty pencil box.  The pencils have changed but the box has been with me since I was 9 years old...and that's a lotta years!  The tab is of my very own making.  They don't make tape like THAT any more.  I think I'll write anything to keep from getting down to it.