a simple device that raises or lowers a magnet to bring it into proximity with the ferrofluid in the jar. i imagine finding this device on a shelf in the back of some Victorian inventors workshop. the device is made of some scrap wood, and brass, and an old vinegar bottle, and other random stuff. the device's only purpose is to contain the ferrofluid, since the stuff is a nightmare to clean up from (stains everything).
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