Assemble ½ banana into each freezer container (or freezer safe baggie). Add fruits/vegetables, then place your containers into the freezer until you're ready to blend each one.
Blend each smoothie with a few pieces of ice and ½ cup to ¾ cup almond milk (enough almond milk to get your blender blade moving).
Blend in "extras" (goji berries, almond butter, maca, matcha, cacao) at the end.
Notes
I use a Vitamix - if your blender isn't as powerful, let your frozen smoothie ingredients thaw at room temp for just a few minutes.
Recipe by Love and Lemons at https://www.loveandlemons.com/healthy-breakfast-smoothies/