Regarding beverages, things changed a lot when I learned that for most of human existence, after weaning, our ancestors drank only water. I've come to see how I used to look at other beverages as entitled, the result of marketing. I drink some other beverages, but mostly water, and I've found my total joy from drinking
higher. Sort of like how in college I drank a lot of beer. Now I sip whiskey sometimes -- less alcohol, more total appreciation.
That said, I read someone write about soy milk makers and did my usual practice of checking Craig's List until I saw someone selling one for $15. I make a batch or two a week from dried bulk soybeans.
For food, note that a few years ago I never cooked from scratch and ate out maybe five nights a week, so all that follows I learned by doing.
I buy what's in season at the farmers market, what the CSA delivers, and from the bulk section. I buy from the same farmers so we've become friendly and they give me a lot of free vegetables -- the ugly ones they take back to compost or the greens others decline when they buy beets or radishes and don't know they're edible. My impression is that my variety has gone up since I'm always buying something that hasn't been in season for ten months, but my friends probably think it's gone down since I make my famous no-packaging vegetable stews https://joshuaspodek.com/food-world-reviews so much.
I rarely eat out of season or non-local foods at home. In the winter after the last cabbages, that means a lot of beets, parsnips, rutabagas, sweet potatoes, etc. I'm fermenting more and started sprouting dried beans, which should increase my greens in the winter.
Frankly, I've never eaten more delicious, while saving money and connecting with farmers, friends, and family more. What started as trying to pollute less ended up giving a lot more than I expected.