The vanishing pen feature would be amazing!
Ideally it could be used when co-browsing on web based apps & also in whiteboard activities.
This allows us to show the student what you want them to focus on without cluttering up the slides or content.
This also eliminates the need to constantly erase things.
It is helpful to highlight different parts of the word with the vanishing pen to show students how to break down the different sounds in the word.
I use this in Zoom for everything!