You can get some amazing broth packets or cubes/coins off of Amazon for both Japanese style ramen and spicy (or non spicy) Korean soups. These are fantastic. Keep the instant broth on hand, put them in some boiling water, toss in whatever veggies, egg, meats, noodles, whatever, give it a few minutes, and voila. Nearly effortless soup.
I personally keep fresh veggies, tofu, dried noodles, dehydrated mushrooms, frozen dumplings, and frozen seafood on hand for this purpose. If I'm using a non-spicy broth, I might toss in some sort of chili paste or other.