I found this on a blog, and jotted it down (& promptly lost track of which blog it was on). And adapted it to reflect what I had on hand & such . . .
Some frozen spinach (probably about 1/3 of a 10oz box), fresh would work too
a pint of frozen peaches
Juice off a can of chunked pinapple, and some of the pineapple
1 apple, peeled & cubed
a handful of dried bananas
Blend it all together & enjoy! Original recipe used fresh spinach, frozen bananas, and included ice cubes, but the blender seemed full enough to not bother w/ the ice cubes (probably could do less peaches). I really don't think you can go wrong here, just stay with the green/yellow/white color scheme if you want to keep it green.