These are designed to use the Balloon twisting Mini Flashing LEDs for lighting. These inexpensive LEDS can be purchased from Amazon. When assembled properly you can just twist the dial to turn the flashing LEDs on or off. Materials required for assembly (not Included) 6 20mm x 2mm circular magnets 3 Mini LED Blinking Lights for Balloons 2 Chicago Binding screws License is for personal use only. Not for commercial printing.