My mom often substituted the ground sausage with leftover pork roast from Sunday dinner. Leftover ham would work well too. Feel free to play around with the vegetables, using different kinds or omitting what you don't like. Other seasonings I sometimes throw in teriyaki sauce (instead of soy sauce), sesame oil, and/or a little bit of red pepper. All seasonings are normally added by taste. Food processing the vegetables gives the fried rice a more colorful presentation along with encouraging those who don't like vegetables to eat their vegetables.