Amazon has the plug that has 2 lightening ports on it. Or a headphone jack and a lightning port

https://www.amazon.com/Sunskey-Headphone-Charging-Adapter-Compatible/dp/B073BFN6RP/ref=mp_s_a_1_2?ie=UTF8&qid=1541103546&sr=8-2-spons&pi=AC_SX236_SY340_QL65&keywords=iphone+charger+and+headphones+adapter&psc=1