Cooking fried rice isn’t a science; you don’t need exact ingredients or measurements. And just about anything belongs in fried rice: leftover roast chicken, fried tofu, ham, frozen veggies. Just don’t use super “wet” leftovers like a curry or chap chye, or your fried rice will most likely turn to mush. As for seasonings, experiment with ginger, sesame oil, kecap manis, chili paste, etc. or add herbs like Thai basil or cilantro.