- blueberries (easily thickens your smoothie)
-kiwi
-pineapple (gives a frothy texture)
-oranges ( a juicier smoothie)
-mangoes (make a really smooth, thick consistency like a malt)
OR what about incorporating nuts/seeds? Use your blender/magic bullet to grind your nuts or seeds down to a fine powder and then put it in with your banana, fruits, yogurts, juices and milks. Yesterday I made a banana walnut smoothie. (Banana, walnut powder made from a TBSP of walnut pieces, yogurt and soymilk). Healthy AND delicious!
And if you're daring, add some green leaves into your smoothie. Spinach leaves are tasteless so you'll get the green color and all the nutrients but no change in flavor. I have also added romaine lettuce and kale.