We all tend to eat different foods for breakfast, depending on our habits and tastes. I never liked breakfast very much when I was younger because plain cereal with milk was fairly unappetizing and still is in my opinion. However, as an adult I have learned that breakfast can be anything from leftover pizza to a delicious spinach and cheese Quiche. Any foods you enjoy in moderation will probably be fine for the first meal of the day.
Now I have discovered shakes that are perfect for summer. There are an amazing combinations of flavors and textures that are available limited only by our imaginations and taste buds. I use a Nutrabullet blender but any powerful blender will suffice. Then start playing with your food.
My current shake is made up of ground flaxseed meal, ice cubes, 8 oz. of ice water, chia seed gel (chia seeds combined with water and soaked overnight), protein powder in any flavor you like, and whatever fruit is in your refrigerator. Less than a minute later, breakfast is served.
This shake also has the advantage to being able to travel with you because the ingredients do not need refrigeration. You only need to pick up some fresh fruit wherever you are traveling as long as you bring your blender along.