I also built a gesture detection module using infrared sensors:
https://github.com/thobach/MMM-Gestures
It requires an Arduino and two infrared sensors for detecting presence and up, down, left, right, close and far hand gestures.
It can be used to turn the mirror into sleep mode when its not used, shows compliments when you stand in front of it and allows to scroll through the news ticker and view more news details incl. the full news article.

@mchrdk @binderth @lavolp3 I created a new module for Microsoft To Do at https://github.com/thobach/MMM-MicrosoftToDo. The migration from Wunderlist to Microsoft To Do was quite seamless.

Could you please test it and provide me some feedback? Thanks!