Place bananas in the bottom of a blender.
Add other fruits and vegetables to the blender.
Pour liquid over blender contents.
Blend on medium for about 30 seconds.
Switch and blend on high to a smooth puree.
Stop blender and check the texture.
With a spatula or spoon, push down and vegetables that got stuck at the top or along the sides.
Blend again until all the small bits of spinach are completely pureed.
Use a pouch making tool to fill the pouches with the mixture.
Refrigerate for up to 2 days or freeze and thaw individually.
The mixture can also be stored in mason jars and frozen to drink with a straw.