Here is the best solution by far for travelers with an Apple addiction, the Nomad PodPro. This palm-sized puck has a 6000mAh battery that can give you two full charges for both your watch and phone. You also don't have to worry about messy wires as the PodPro neatly organizes your charing cable and sets the charger in the middle of it so it does double duty as a dock. The lightning cable is also integrated and hides away neatly when not in use.
$79 (pre-order), Nomad