I tested the most VIRAL TikTok gadgets!

Dancing Ferrofluid: a repost of a favorite piece of interactive kinetic art- with a black magnetic fluid interacting with a variable strength electromagnet (like those found in speakers). A circuit supplies power to the electromagnet in proportion to the sound waves picked up by a microphone, the changing magnetic field- combined with the liquid surface tension of the colloidal ferromagnetic liquid- produces the captivating motion that keeps time with any music played. Featuring “12 String Thing