Taylor gave the 1989 Christmas Lectures under the title "Exploring Music", and the third lecture dealt with flat plates and hollow bodies. The Royal Institution posted this excerpt in 2019. He recreates the Chladni figures in front of a live audience and then does the thing that gives them a point: connects the vibrating plate to the top plate of a violin and the body of other instruments.
That framing is the historical one. Chladni's figures mattered in the nineteenth century partly as a curiosity and partly because instrument makers and acousticians needed to understand how plates vibrate, and Taylor puts the demonstration back in that lineage rather than presenting it as an end in itself.
It is also a good record of how you present this to a room rather than a camera: bigger plates, slower pace, and everything sized so the back row can see the sand move.