MMmMmm... Ramen! Besides the standard egg, which is tasty, these are usually what gets put in my instant noodles or soup at any given time. Ingredient suggestions are courtesy of my Chinese girlfriend and her "I'm too tired from work to cook your sorry ass anything complex" or "Getting rid of leftovers" menu...
+ Chopped green onions (Big help on the flavor, cheap too!)
+ White pepper. (It can be found cheap if you have a local asian store. American stores charge a premium for it... great in soups)
+ Seasoned Seasame Oil
+ Plum sauce (Used in drained noodles only, the spicy/hot version has a real nice flavor)
+ Peas
+ Carrots
+ Chopped broccoli
+ Dried Seaweed (Use in soup noodles only. It adds a lot of flavor and some texture, not for everyone though)
+ Pork (Roast or chops, cut into thin slices or cubed)
+ Canned Tuna (Use in drained noodles only, my version of poor man's casserole!)