As far as breakfasts go, mine can be fairly boring. Now, that doesn't mean I don't enjoy it, just that variety is lacking.
Most mornings I have an energy bar for breakfast. Its the easiest thing for me to have as I can grab it and go if need be, or munch on it while I get the day started around the house.
Plus, at around 210-240 calories, I have some leeway in terms of setting myself up for a positive day with calories. I hate to reach my pm snack with only 600 calories or so to spare because that makes for a light dinner.
For the longest time, I ate the max zone energy bars from Costco but last time there I bought cliff bars and they were quite good. Still gave me plenty of energy and quelled my hunger.
I think my favorite bar though is the snickers marathon energy bar. I don't know why but it seems the only place I find these are in convenience stores. I was in Utah last year and found some in some out of the way place. And recently I got some in Arizona as I stopped somewhere on the way home and came across them.
Maybe I don't look in the right places here but I can't find them. I don't remember the exact moment I had my first one of those but I had an awesome run after eating that. I believe I got a free sample in one of my early races and I got hooked.
Anyway, I've often tried mixing up the breakfast. Usually that's when I'm out of bars. One thing I like is fiber one cereal but its so expensive. That's a good alternative. Plus you knock out so much fiber in one serving that you are set for the rest of the day.
I also like to have fruit sometimes, with yogurt or just by itself.
But I like my energy bars best. Give me a bar and a glass of water and I'm a happy man.