It would be just short of writing a book to get a real in-depth answer.
Jars is an easy one; I reuse jars a thousand times refilling with milk, stew, soup, canning, etc.
Water is pretty easy too, at least here because there's so much rain a person could collect and use water without paying for it if it were legal.
You'd basically just do away with plastics, which would be healthier anyways. If a person was really self sufficient they might have some sort of kiln to make their own pottery; plates, cups, etc for when some break. I have so much clay in my ground I could be eating on new plates everyday if I knew how to make them.
To be really self sufficient a person would have to raise their own flour. Salt is probably about the only thing a person couldn't do without buying.
I've seen Discovery channel episode that showed how to make paper from elephant poo though I doubt anyone has elephants on their farm I think the same theory could be applied to cows or horses.
A couple dairy goats and chickens would suit dairy, eggs and meat categories. Or add a couple of geese to that mix and make your own pillows, blankets, etc from the down. An alpaca would make good spinning material and no worries about allergies.
If you had enough room you could grow all the firewood you'd need for cooking/heating/smoking. Smoking would be an easy cure for meats since you wouldn't want electricity. A deep root cellar or spring house if you had one would be your fridge.
The only real money would go into finding the property, equipment and the animals to start the endeavor.
That's just a start.
But I love daydreaming about living off the grid so I bet that won't be the last I think of the question.