It was always a good tradition of T3BOARD, that there were people doing sessions in the evening. Either some cool features got coded together or someone presented a solution to a particular problem.
For T3BOARD23 we will have a room for our sessions, made available by the hotel.
There will also be a dedicated 'session-beamer' for your purpose.
Session planning will be held during (or directly after) the meal in the evening in barcamp style.
Sometimes, werewolves could appear after the sessions ... ;)