What about videonot.es? Can you save a youtube, add notes and quiz type questions and in your google drive? Yes it is.... See this post about it.
Need to add a signature to a google doc?
Hellosign add on can help. Fast and easy and then download as a PDF and print or email. You have a legal document.
But for the student's in my room...Nothing was as cool as PowToon. An example of a student created work is embedded below.
What are the cool add on's for google drive you are using, leave a comment and share with others.