Oatmeal is a great idea. I like the McCann's Irish Oatmeal that I can buy at Trader Joe's (Kimmi, you should try it too!). It bears no resemblance whatsoever to the Quaker Oats. Not even in the same ballpark. It tastes good by itself but if you want to be extra healthy, add in almonds and/or dried or fresh fruit. Carrying on with the oatmeal idea, home-made granola is also good, easy to make, and so much better for you than that boxed crap they sell in the groceries.
Fruit cup, made the night before for convenience sake, is a good addition to any meal. Goes without saying. If you can stand a bit of yogurt, make your own fruit smoothie--fruit, fruit juice of your choice, 3 tablespoons or more of yogurt, and a few ice cubes. The variations you can make are endless. You wouldn't get bored. Plus, you can mix in some high fiber cereal to beef up the smoothie.
Quick-cooking grits are a nice change of pace for breakfast and are no trouble to prepare.
Peanut butter sandwich with different toppings--jam, honey, Nutella, for example, on whole-wheat bread makes a good breakfast, with fruit on the side.
Smiling JOe, the internet is also full of breakfast ideas. Everyone loves reading about food!
). Anything other than whole grains do not fill me and leave me with food cravings. 
