Bubble lights, a nostalgic Christmas tree decoration, were introduced in the late 1940s. These unique lights feature a small vial of liquid, typically methylene chloride, which bubbles when heated by a small incandescent bulb at the base. Their mesmerizing effect quickly made them a popular alternative to traditional string lights.
Originally marketed by companies like NOMA Electric Corporation, bubble lights became a staple in mid-century holiday decor, symbolizing the era’s fascination with novelty and innovation. While their popularity waned with the rise of modern LED lights, bubble lights remain a beloved vintage decoration for many holiday enthusiasts.