Try a flavored stir-fry sauce instead of regular stir-fry sauce. Look for them in the Asian foods section of the grocery store.
Select a variety of cut vegetables from the salad bar at the grocery store. Remember that, depending on their firmness, different vegetables require different cooking times. Firm vegetables include carrots, cauliflower, celery and onions. Medium-firm vegetables include bean sprouts, bell peppers, broccoli, mushrooms, pea pods and zucchini. Tender vegetables include spinach, cooked sweet peas and tomatoes.