Are you able to purchase, for instance, liquid dairy products without packaging? Have you had to cut out whole categories of food?
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.
This is tangential but brings me to something I find hilarious.
Farmers here don’t tend to give those vegetables away to anyone. They repackage them and bring them to the farmers markets in the city and market the hell out of the whole “farm to table/rustic” thing.
I’m from the townships a lot of the stalls I see here (Toronto) come from.
My partner fell for it once and I rudely laughed at her (I’ve apologized!). She went out to one of the local markets and picked up what was a ...rustic... looking and misshapen long bell pepper. Taking one look at the thin-walled, Unripe green/ruddy thing I just sort of blurted. I explained to her why they’d bring that stuff up to the city on their weekend stall day along with their other goods.
We cut it up and tried it. It was horrible. It was bitter and somehow hard even though the fruit was only about 3mm thick.
And I still find it funny because I know those families and their produce is amazing. We go to one of their shops whenever I visit my family and load up.
Waste not want not, eh?
You can purchase them with non-plastic packaging (glass particularly; cardboard cartons use plastic liners.)