With ordinary supermarket ramen I usually add diced onions, napa cabbage, Guilin sauce, and tofu or surimi.
What’s really good is their “Shrimp Creamy Tom Yum” variety. It’s the one in a bigger, gold-colored wrapper. It comes with three separate flavoring packets – soup base, chili paste, and red pepper. If you use them all it’s crazy spicy and very flavorful. There’s no other ramen like it.