This is about more than pens. It's about kitchen order, as established by the several people who normally cook in that space. So, IMHO, it has to do with attention and respect for someone else's equipment and order.
Pay attention to what you find and use. Where it was. How it was placed. If you don't remember when you are cleaning up, and I assume you are cleaning up, don't just stash it somewhere, but leave it out in an obvious place where the main guy can put it away properly.
We've had a weekend place for 40 years, which means a lot of guests have come through. as well as adult son and various dates and eventual wife. We've had few problems, the occasional phone call re "where it the,,", and mostly clean stuff left out for us to put away. And in later years when he has used the place almost more that we, some new organization which sometimes has been for the best.
