Beyond simply that of a dance combo tutorial, here are some ideas for other video based content that you and your teachers could create to add extra value for your students.
Daily repeatable stretch / strengthen sessions
Video talking about dance movies and suggesting ones to watch
Breakdowns of specific skills, and detailed how-to's for practicing them at home eg. pirouettes
Full breakdowns of syllabus work for regular practicing
Story time - reading a book - for pre-schoolers
An acting workshop with a downloadable monologue script to work on at home and film / upload
A dance themed quiz
A studio themed quiz specific to things in your studio eg. teachers, inside jokes, past routines etc.
Zoom interviews with your teachers, about their inspirations, their advice etc.
"Catch ups" just for group chats
HOME DANCE OLYMPICS - with a bunch of challenge competitions in one session
Different styles than you normally offer eg. yoga, pilates, waacking, body percussion etc. (bring in experts for styles you're not trained in)