A couple of weeks ago, NOMAD reached out to me to see if I was interested in checking out its latest smartphone charging device. I get a lot of pitches for random products, and to be honest, I ignore many of them. But I'm glad I responded to that message, because the ChargeKey might be my favorite new Lightning-to-USB charging thingee. The concept is simple: A key-shaped charger for iPhone (Lightning) and other smartphones (micro USB also available) that unobtrusively attaches to your key ring. It's durable, but flexible, and you always have it when you need it, assuming you carry your key ring all the time. The ChargeKey cost $29, but it's currently backordered, with an expected ship date of March 15.