The picture on the left was my original blueprint idea for the dipole jars. It involved trying to get the magnet to rotate, simulating magnetic excursions and reversals (either through shaking of the jar, spinning of the sphere, or by placing another magnet close enough to it to rotate the poles). It also involved placing magnetic filings on the outside of the sphere, suspended in air or mineral oil, which would illustrate the movement of the magnetic field. While I was able to create 3D-printed gyros and can simulate motion of the bar magnet, adding magnetic filings proved very messy and made the whole thing difficult to assemble. I ended up going the easy route for demonstrations and for outreach activities, getting rid of the filings entirely. The two videos on the right show the final product. I hope you enjoy!