Found this gif of a vector field on wikipedia. It was used to explain the Amperian loop model for a magnetic dipole.
I find it aestetically strangely calming (as well as an effective graphic for explaining the concept.)
The gif was created by user "Geek3". It's at:
https://en.wikipedia.org/wiki/File:VFPt_dipole_animation_magnetic.gif
The page also includes the Python source s/he used to create the graphic.