Meet the WonderCube: a tiny 8-in-1 tool that lets you charge your phone, use it hands-free, and do a whole lot more. It is compact enough to carry with your keys. It has a stand to hold your phone in portrait or landscape position. It comes with Apple MFi Lightning & MicroUSB connectors.
The emergency charger offers up to 3 hours of talk time. It also serves as an OTG flash drive, MicroSD reader, and emergency light.[where to get it]