Here is a post I ran across with several meals at or around 300 calories:
http://www.diet-blog...s_look_like.php
It reminded me of this other site I ran across awhile back "What does 200 Calories Look Like?":
http://www.wisegeek....s-look-like.htm
Where they show the volume of different foods that make up 200 calories, in order from highest volume to lowest (If you click on the individual pics you see the full one). At the high end are celery, broccoli, peppers, and carrots; and at the low end are peanut butter, nuts, butter, and canola oil.