Incipio Quick Car Charger
Last but certainly not least is a car charger. These days many have a higher 2.0amp output, but they aren't Quick Charge 2.0 certified to deliver you a safe yet fast charge. Incipio, an extremely popular case and accessory maker offers one for your vehicle, and you'll want one.
This way you can get the same extremely fast charging feature on your Galaxy S6 while driving. Meaning that if you're out of battery and driving to the bar to meet some friends, a 20 minute drive will get you to nearly 40%, and you'll have enough battery for the remainder of the evening. It is usally over $30, but on sale now for just $19.99 and is well worth it.