I think that the most effective classes are ones where there is a mix between freedom and control/structure. Students are free to make (polite) jokes and enjoy themselves, but don't totally derail the whole discussion.
- Functional microphone
- Functional camera
- Charged computer
- A quiet space
Students and teachers need to be prepared for how their daily schedules will change. It probably won't be exactly the same every day (and shouldn't be) but take don't be afraid to figure out what works best and make those changes. Flexibility is really important when you're doing school online!