What’s better than a necklace that looks likeÂ an Apple power button? A necklace that actually replicates the slow, pulsing light of an AppleÂ power button. This sexy-chic pendant was created by Adafruit; they are designing wearableÂ but subtle electronics. Each of these pendants has a circuit board, pulsating LED, and battery. When you give the iNecklace as a gift, resist the jokes about being able to turn the recipient on and off.