The Washington Post has an ultimate parent's guide to activities for kids which they update as needed. Usually Post articles are behind a paywall, but because it's related to the pandemic, you should be able to access this resource for free. Check out the article here.
Another arts organization is offering nightly streaming of their operas, on their website. The selection changes regular and can be found at their site. Check it out here.
Disney and The Lion King are offering a free kids online theater course. I know you may feel overwhelmed right now, but trying something new and fun might help sustain you. Here's more information on the course.