Børnenes Julekalender 1975 was developed from the popular 1972-73 series "Tyllefyllebølleby" sharing both writer and leading actors - centering on the ever playful and teasing interplay between Jytte Abildstrøm and Hans Christian Ægidius.
A few years later, leading actor Hans Christian Ægidius would direct a popularly acclaimed season of Børnenes Julekalender, that was "Jul i Gammelby" of 1979.