One of the most often used tools in my studio is my Sharpie pen. I love the new colors! I probably have over 20 pens at the moment, and lust for several more.
I’ve been doing some copper etching and the fine tipped sharpies make a nice resist. I need to experiment with the different colors and see if any work better than others. The fatter tips makes a slightly better resist but are hard to get any kind of detail with.
A good pen in a happy color can bring a childlike grin to my face!