Chives and oregano grow even when you don't want them too, start there XD. Had a big afro of oregano in my mother's yard for year until she actually dug it completely out. Its perennial which means it comes back each year. Chives were the same, and those are still there. Green onions are similar. For the chives, I don't pull out the bulb to eat, I just trim off the green parts, so they become perennials then too.
Also, garlic, but you have to start now and wait a year or 2 for a full sized bulb to finish growing. This all grew in Calgary and its got extreme temperatures and heavy dryness, so as long as it can grow against a wall for some shelter it ought to survive forever!