This activity shows a magnetic field projectual being used to reveal the magnetic field around various configurations of bar magnets. As with all RT;DLs, this activity began as an in-class lab and has been retooled for online delivery.
Seeing Magnetic Field - Movie Export
Seeing Magnetic Fields - Student Document (to make your own copy)
Seeing Magnetic Fields Observations and Mysteries - HTML Export (this link is in the gdoc, too)
I will confess that I find watching iron filings slowly align with magnetic fields on a large screen to be calmingly satisfying. I suppose it's my ASMR.