This all sounds so...gross.

Blueberry ground flax- near the cereals. I throw it into their smoothies.

There are these almond cookies that come in a paper bag - they are high in omega 3s and low sugar. my kids think they are delicious cookies.

Beyond what's been mentioned, like fruit and cheese, my kid likes the "letter cookies" (low-sugar Schoolhouse cookies with cinnamon) and the Cheddar Rockets crackers for treats. We all like the frozen fish nuggets for a quick weeknight dinner. They are sooo much tastier than regular fish sticks.

Bananas

Trader Joe's has the cheapest bananas in town, and my kid goes through them by the bunch.

Also their fresh mozzarella sticks are so much better than string cheese. My toddler couldn't care less, but if I'm going to "share" snacks I want the good stuff!

Plus lots of other things already mentioned here.

Chocolate covered blueberries
Fish sticks
Applesauce/carrot pouches
Garlic hummus
Cereals
Granola/cereal bars
Oatmeal with flax
Frozen fruit
Plain whole milk yogurt
Nuts

And basically everything else we buy from there for us.

My kids also love the blueberry goat cheese. They beg for it.

They are also fans of the carrot-applesauce squeeze pouches, Inner Peas, the Valencia (salted) peanut butter, and the Harvest Grains blend (it's a great alternative to plain quinoa or couscous).

We like the little quiches. A good size for a child to split or eat for a meal.

turkey meatballs, polenta, apricots, raisins, ravioli, frozen edemame

Edemame, freeze-dried fruit, those melty popcorn thingies, their version of cheerios, blueberry waffles, yogurt, etc.

Not the healthiest but their chicken nuggets are very tasty for a quick meal. Also the frozen gnocchi in tomato sauce, frozen curry dishes, some of the frozen veggie sides (like there is a cauliflower in butter and herbs, a curry quinoa with veggies, etc.).

freeze dried fruit.

the snap pea chips
string cheese
yogurt
cereal bars
cinnamon apple stcks
gnocchi
frozen falafals

My toddler loves the goatcheese covered with blueberries (not sure what it's called).

I don't shop at TJ's much so looking for your recommendations!