It’s on every packing list, though we hardly need to write it down to remember it: a smartphone. Few of us travel without one these days, and more often than not, our technology haul extends beyond just a phone; a tablet or e-reader, digital camera, laptop, portable charger, and wireless headphones may be on the list, too. Whether you’re working remotely or not, chances are you’re bringing your entire digital setup with you. But throwing a tangle of cords and technology in your carry-on is a recipe for frustration when you find your face pressed up against the tray table, blindly searching for a charging cable in your under-seat bag.