From PhysicsCakes https://twitter.com/PhysicsCakes on Twitter: Its 1st December, which means its time to start opening doors for the #CERNCorridorCupboardAdventCalendar ! The honour of opening the first door goes to Max, who first alerted me to the existence of this treasure trove. https://twitter.com/PhysicsCakes/status/1201080399897739264/video/1 https://chirp.cooleysekula.net/attachment/62416