Anything in particular? I was thinking of things like viscosity and stress analysis for fluid mechanics. It would be easy enough to animate a stress tensor and show how each term behaves when prodded. Similarity the basic concepts behind laminar boundary layers would be equally straight forward.

Mimicking 3b1b’s style would be trickier since he uses a lot of 2D plots. Of course you can run python directly from blender so you never know.