Jellyfish lights are a popular option for lighting a home or garden. These lights come in a variety of colors, shapes and sizes and can be installed onto the ceiling or wall. They have become very popular in recent years because of their unique style and design as well as their low price. .Jellyfish lights usually come as a single bulb, but there can be colors of bulbs. Jellyfish lights are typically used for both decorative and functional purposes. They are commonly used in bathrooms, dorm rooms, offices or even bedrooms.