Cereal is good but there are better foods that are just as easy as making a bowl of cereal like Blueberry Yogurt with Granola or Fruit.
A glass of milk has good amounts of Calories and Protein
I usually save a portion of a meal I had for dinner the night before and have it in the morning. Breakfast doesn't have to be limited to eggs or cereal.
Or you can try raw eggs in a glass mixed with whiskey. Thats how real men roll

LOL Just Kidding.