The last remnant of the Teutonic knights was a duchy called "Prussia" that was subservient to Poland. What is the most ridiculous wank, without getting into ASB territory, that you could do with the duchy?
Note they may have to unite with some other principality, but keep it from being so lopsided that the ruling dynasty still identifies as "Prussia".
Note they may have to unite with some other principality, but keep it from being so lopsided that the ruling dynasty still identifies as "Prussia".