A collection of vintage mid-century Christmas bubble light bulbs. Each bulb consists of a sealed glass tube containing colored liquid, mounted atop a decorative molded plastic base with a metal candelabra screw connector. The assortment features a variety of liquid colors including red, orange, yellow, and blue, with some tubes containing visible sediment or glitter intended to enhance the bubbling effect when heated. The plastic bases are finished in multiple colors and two-tone combinations of red, green, blue, yellow, and cream. Several bases feature molded embossed markings. One red base bears the impressed characters PAT. # 242484. Another red base displays PAT. # 2. A blue base shows the embossed number 2289. A representative bulb measures approximately 4.75 inches in length.