Things to do in quarantine (other than writing)
Make long, drawn out descriptions of your characters
Create moodboards, playlists, art, or anything else to do with your WIP
Write a dumb au- just for yourself. No deadline, no pressure of quality. Just write.
Figure out the perfect circumstances to write- do you like to drink coffee? Tea? Table, or lap? Music, TV, silence? Try out new things, too!
Clean up your workspace, if you have one. Decorate it. Make it home.
Go for a walk and listen to your muse playlist.
Try to cosplay one of your characters, no matter what you have at home.
Understand your MC better. Imagine them in quarantine- what's their favourite food? Their favourite music? Their favourite pastime? How do they sleep? How do they clean?
Make a shitty rendition of something from your story. Build a character from clay. Sew someone's outfit from scratch. Make a prop from tinfoil. Recreate a room with Lego.
Have stupid fun! Get to know the world of your story, get stuck in Wikipedia holes, scroll shopping websites for hours.
Just have fun, and feel happy knowing it'll help your world, even if you're struggling.
What we need right now is entertainment. Not stress.