Christmas lights (also called twinkle lights, holiday lights, and mini lights in the US and fairy lights in the UK), that are strands of electric lights used to decorate homes, public/commercial buildings and Christmas trees during the Christmas season are amongst the most recognized form of Christmas lighting.
Christmas lights come in a dazzling array of configurations and colors. The small "midget" bulbs commonly known as fairy lights are also called Italian lights in some parts of the U.S., such as Chicago.
The types of lamps used in Christmas lighting also vary considerably, reflecting the diversity of modern lighting technology in general.
Common lamp types are incandescent light bulbs and now light-emitting diodes (LEDs), which are being increasingly encouraged as being more energy efficient.
Less common are neon lamp sets. Fluorescent lamp sets were produced for a limited time by Sylvania in the mid-1940s.