Get the ziplock bags. Take the Amazing Grass powder, Antioxidant mix, and measure out enough for all the days you are traveling. Bring the shaker bottle, the ziplock bags and the effervescent tablets. The tablets are for during the day to get your nutrition in.
If you have room, the portable blender is great. You can visit the smoothie and juice places or the little grocery stands for bananas, apples, pears etc at the airports and get basic ingredients to mix in with your powders. These will make you feel happily full and not give you the drag of the yo-you blood sugar from a burger or candy.