Here are a few ideas:
Banana, orange juice, and Superfood (from Dr. Richard Schultz) in a blender. The Superfood will give you just about every nutrient and vitamin that you need and also contains things that help you lose weight, give you energy, give you better skin, etc.
Berries, ice, water (frozen berries are good)
Berries and milk (try all kinds of fruits, but maybe not citrus - these drinks are very common in Colombia and they are caled "liquados" there.) Try banana, strawberry, blueberry, blackberry, maybe mango, etc.
Berries and yogurt
Berries and yogurt and milk
Soy milk with fruit.