What is spencer lava lamp?

Spencer lava lamps are a type of decorative lamp that feature swirling patterns created by heated wax rising and falling in a liquid-filled glass container. They were first introduced in the 1960s and quickly became popular as a symbol of the counterculture movement. Today, Spencer lava lamps are still manufactured and sold by the Spencer Gifts chain of stores. They come in a variety of sizes, shapes, and colors, and can be used to add a unique and playful touch to any room or space. The lamps require a heat source to melt the wax and start the swirling motion, usually in the form of a light bulb or other heating element.