I came across this tweet in which an artist uses Blender's grease pencil tool to create a 3D object by drawing. I'm really interested in the potential of this way of creating backgrounds and animations. It might be useful to experiment with and consider how characters might interact with a three-dimensional environment - sort of bordering on research into hybrid animation.
https://twitter.com/ukasz_rus3k/status/1475897845379121167?s=20
https://www.blender.org/features/grease-pencil/