A light bulb with a christmas tree made of snowflakes insideA light bulb with a Christmas tree made of snowflakes inside
Spiral staircase with round light bulbs on threadsSpiral staircase with round light bulbs on threads
A light bulb with an incandescent filament on a black backgroundA light bulb with an incandescent filament on a black background
There are three green yellow and red light bulbs on a black backgroundThere are three green yellow and red light bulbs on a black background
Electric light bulb as a symbol of light in the darkElectric light bulb as a symbol of light in the dark