Oysters - A good brand, they can be obtained on Amazon. I prefer the chili pepper ones. They also come smoked in just olive oil (no pepper) and traditionally packed in water.
Oatbran - Best company hands down. They also sell the best powdered milk on the market too. These products can also be found at Amazon.
Cheese - This is my main one, although I will occasionally pick up some fresh raw cheeses as well. Only ingredients is the milk, culture, and rennet. You may be able to order it, but it's best to just have a Costco membership so you can pick it up.