My breakfasts are usually 300-450 calories; I prefer a hearty breakfast! However, I certainly do not advise counting calories. A few ideas...
Cereal with milk and a sliced banana, raisins, or other fresh or dried fruit
A bagel or toast with peanut butter and banana, jam, yeast extract or other spread
Breakfast burritos (bean and rice, peanut butter and fruit, or scrambled eggs/tofu)
Porridge with fresh or dried fruit
Muesli with milk or yoghurt
When I'm in a hurry, I try to grab some sort of grain (a bag of muesli, granola or cereal, a few oatcakes, toast, a bagel, wholegrain crackers), some fruit (fruit juice, dried or fresh fruit) and something with calcium in (a glass of dairy or nondairy milk, calcium-fortified fruit juice, yoghurt, a small piece of cheese, almonds, etc).
I eat when hungry throughout the day and do not count calories or ensure proper distribution; I've found that my body is able to do so naturally on its own.