Hans Jenny, a Swiss physician and follower of Rudolf Steiner, coined the modern use of "cymatics" and published two volumes of images in 1967 and 1972, made by driving powders, pastes and liquids on plates and membranes with a device he called the tonoscope. This two-minute clip of that footage was posted in 2009 and has since been seen well over a hundred thousand times.
The images still hold up. Iron filings organising into lattices, viscous fluids climbing into standing heaps, powders resolving into radial figures — all of it done photochemically, decades before anyone could fake it.
Two caveats. This is a third-party upload with no description and no stated source for the material, so treat the attribution as plausible rather than established. And Jenny's own interpretation, that these patterns evidence a formative principle running through nature, is a philosophical position from the anthroposophical tradition, not a finding. The pictures are the legacy; the theory is not.