If you would like to be active for 30 minutes a day (which you should!), you are familiar with how to do a 3-5 minute stretching routine and you can all do the 5 minute challenge – perhaps you can get a grown up to join in with you?
You have all also performed fitness circuits in recent weeks and should be able to design an indoor fitness circuit around your home, without having to use specialist equipment. A minimum of 5 and a maximum of 8 stations working for 60 seconds with a 60 second rest in between is something you have all managed in lessons.
There are several very good Apps that could be downloaded and used on devices, the 7 Minute Workout is good and the Couch to 5K is excellent to develop endurance levels in the long term. All good for boosting the immune system and fighting infection.