Both Greece’s mainland and its jigsaw of sun-drenched islands are a perennial favorite of our editors; the allure of getting lost in whitewashed Cycladic villages, hiding out in a pine-fringed cove, or setting up on a sunny terrace overlooking the Aegean draws us back year after year. And that’s without even mentioning the food —heaping bowls of Greek salad, arrays of mezze, and the freshest seafood you can imagine. Who could blame us for returning over and over? It means we’ve all got packing for this island escape down to a fine art, nailing a concise edit of items that take us from lazy breakfasts to saltwater swims, afternoons wandering sleepy harbor towns, and al fresco dinners as the sky turns pink over glittering seas. Below, our editors share the items they never travel to Greece without—whether the agenda means slowing down on Antiparos, watching sunsets in Santorini , or discovering lesser-traveled corners such as Tinos and Folegandros.…