Nomad Lightning-Equipped Carabiner
Always have a charging cable with you at all times with Nomad's Lightning cable enabled USB.
This is an independent review. NOT a paid endorsement
Video Review Link: http://www.youtube.com/embed/EFcMSXISG3s
The carabiner has a solid construction (though should not be used for climbing). The cord blends right into the body of the carabiner, so it is out of the way when not in use.
To get to the Lightning cable, you can pull out on the bottom, as well as the top.
The Lightning cable is MFI approved which means they worked with Apple to ensure that the cable will fully function with your iOS device.
I do wish they had an updated version with USB-C, but Apple has limited third-party manufacturer support for this.