I mainly drink veggie or low gi fruit/veggie mixes.
My usual veggie one consists of 1/2 a small avocado, 1 rip tomato, 1-2 cups spinach, 2-3 leafy stems of kale, flax meal, 1/2 an english cucumber, 1-2 stalks of celery, on occasion hemp seed oil, broccoli or leaf lettuce. This usually makes about 2-3 large glasses, and I usually store them either in a plastic wrap covered glass, a jar or plastic bottles with a large lid.
I know that fruit/veggie combo sounds gross but it's my standard go-to liquid meal, usually I blend up 1 cup fresh or frozen strawberries, raspberries or blueberries (sometimes it's a frozen mix), 1 cup spinach, 2 leafy stems of kale, 1 cup yogurt preferably organic 3.5% fat, I personally use the "Olympic" brand, 1/2 avocado, organic whey protein powder(this contains zero sugars, or artificial sweeteners like aspartame, I personally like mine Vanilla flavoured, but you could also buy chocolate flavoured, or just save money by just adding cocoa powder to the vanilla powder), 1/2 cup filtered water or ice cubes, flax meal. Kefir(a yogurt-milk like substance) can be used to replace the yogurt, and you can buy plain or a berry flavoured one (my local supermarket sells a raspberry flavoured Kefir, that's super delicious.)
My usual smoothies are very large quantities and keep for about 3 days refrigerated. I'd also advise if you are really keen on lots of smoothies to invest in a good quality blender, like a high powdered kitchenaid or a vitamix. I personally own a vitamix, and these have a very large price tag, but it can also make hot soup and icecream so it was worth the investment.