The counting
But cups and plates should not be on the desk. Shorts and jackets on the chairs as well.

There is a good humorous book, “Peter’s Principle,” written by Lawrence J. Peter. It belongs to the same family as Parkinson’s Law and Murphy’s Law. Love for a clean table was mentioned there, in the chapter "Non-Medical Signs of the Final Stop". The main theme of the book is the laws governing incompetence.