Noun
lava lamp (plural lava lamps)
A kind of lamp, typically used more for decoration than illumination, in which the gentle flow of randomly-shaped clumps of wax purportedly suggests the flowing of lava.
Rollerball is an incoherent mess, a jumble of footage in search of plot, meaning, rhythm and sense. There are bright colors and quick movement on the screen, which we can watch as a visual pattern that, in entertainment value, falls somewhere between a kaleidoscope and a lava lamp. Roger Ebert
I have a bit of a lava lamp fetish. They are kind of hideous, but there is something so therapeutic about them. Bella Heathcote