I had an avocado that needed to be used so I looked around for smoothie recipes that used them...the recipes I found called for other ingredients I didn't have on hand, so I experimented with creating my own and it turned out quite lovely.
1 cup frozen pineapple chunks
1 cup baby kale (or spinach)
1 cup orange juice
Maple syrup to taste (I used about 1 1/2 tablespoons)
Place all ingredients in blender and blend on high til smooth. Yum!