We used to use these Pantone pens (pictured below) mostly for storyboards. We would spend hours with these uncapped pens in a little unventilated room. "Irrk--- Irrrk---- Irrrk----" (pens squeaking) Dennis Pirello and I would slog away endlessly on projects--- deadlines looming----working through lunch---- and eventually we'd find everything hilarious...."It's 2:00" "hahahahahahahahahahahahahahahaha"! high on the fumes. Good times! Those were the days when safety wasn't a big consideration. It's sort of a wonder Dennis and I are still alive.
Sketch: Celeste Bergin, Do these Markers still work? Marker on gessoed paper