I add a handful of dehydrated mushrooms and a small handful of dehydrated veggies (corn, peppers, peas, etc.). Super easy and definitely kicks it up a notch.
Fried slices of a good garlic sausage are a great extra as well (fried fake chicken works well as a vegetarian option). If you eat them dry, some pickles, corn and roasted onions are awesome (but with sweet indonesian soy sauce not salty soy sauce).