I teach geometry and it has been a big struggle doing things remotely - not being able to see my students work easily made quick communication really difficult and frustrating. I got the idea for this from georgewiman (https://www.thingiverse.com/thing:4558119). While I like the design, I wanted something that would be easy and quick for my students to setup.

I have only had my class using them for a little over a week, and it has completely changed how we are able to communicate (and them with their classmates). Added bonus - students are much more willing to have there cameras on when it is their work being shown...and I know exactly what they are writing (or not!) for their notes/etc.