here i document my invention of the ferro fluid lava lamp.
the lava lamp is covered with a glass dome, half spherical in shape. the bottom is half a cube in shape in which the neodymium magnet rests on a gear which rotates the magnet there by changing the shape of the ferro fluid in the glass dome.
on the bottom is a light to make the dome glow.
i obtained a royalty free image from wikipedia on ferro fluid, and modified it to my liking.
the drawing is not that good but I rarely use the gimp now days.