TJ has hundreds of great things, all across the store and in every category. Hard to say what you'd like unless you are more specific. Good news is, if you just browse you'll see interesting things wherever you look.
For shelf stable things, check out the sauces and condiments aisle, and the cracker and chips.
Wine drinker? You will be spoiled for choice even if you want decent wine under ten bucks. Or under five bucks.
Personally, I'd take a cooler and plunder the frozen food. Excellent frozen seafood at good prices, lots of unusual appetizers, many different entree dishes.
Or or you might do well stocking up on house and beauty products. I swear by their hand creams, candles, dish soap, supplements...I could go on.
There are plenty of special and more pricy things--cheeses and cold prepared food--but you can save a lot of money sticking to the basics, and get better quality as well.
Have fun!