I buy milk, eggs, butter, bagged salad, cheese (block cheddar, grated parmesan and crumbled blue).
I do staples like flour, sugar, basic spices, etc.
I get walnuts or pecans when I need them and sometimes dried fruit.
I also do fresh produce, especially avocadoes, limes, pineapples, apples, tomatoes on the vine, celery, red and yellow bell peppers. You will be shocked at the prices on some of these things.
I buy flour tortillas, pretzels, cinnamon graham crackers and taco chips almost every time I shop at Aldi.
I buy a couple kinds of canned food -- refried beans, chopped tomatoes and tomatoes with green chilies.
When they have it (it's seasonal and gone now) I get a cinnamon swirl quick bread mix that's excellent.
The frozen apple strudel is wonderful, but I don't do that often. I've also been known to buy the individually wrapped cinnamon rolls and even (yikes) tator tors -- all were fine.
The only thing I can think of we hated was the coffee.