I first saw a power button necklace posted on Pinterest, it was called an iNecklace which can be found at Adafruit
, it is made from CNC machined aluminum and the light gently pulses. But with a price tag of $75 I opted to try to make one myself. Mine is what you'd call the poor women's power button necklace, it was put together from stuff I had lying around the house. Although my necklace is plastic and the light doesn't pulse, it cost me hardly anything to make and I put it together in one afternoon.