I adore OneNote. I use google docs for group work and for students, I use OneNote for everything else: Lesson Planning, Journalling, Vacation Planning, Project Planning, etc. It is my favourite way to organize all of my ideas. And best of all, everything gets backed up online (instantly) so I know it’s safe and easily accessible if I’m ever in a bind. Plus it’s free across all platforms so I have no problem recommending it to others.