This is pretty much the coolest thing I've ever made. It actually works like it did in the show. Hold this necklace up to an NFC enabled phone (pretty much all android smartphones) and watch it in action!
When placed on an NFC enabled device, these will automatically load sn.im/schematicswhich is a shortended url which forwards to an animated gif sequence created from screenshots from the show. enter that URL in your browser to see it.
Here's a video of it in action!
Anyway, I'm selling them at $100 each, which includes the functioning pendant with embedded RFID tag, and a stainless steel ball chain.