Cymatics refer to vibrations making patterns in fluids, particulate matter etc.

The soup bowl has an audio oscillator at the bottom that plays various frequencies to make the soup dance. (see link)

Could have it in cocktail glasses too. Maybe just have a little unit with a suction cup you could stick in any bowl or glass.
-- doctorremulac3, Feb 19 2023

Skip to 1:00 https://www.youtube...watch?v=Q3oItpVa9fs
[doctorremulac3, Feb 19 2023]

random, halfbakery