Found these searching Amazon for "3 compartment food containers":
With that said, don't knock takeout-looking containers- as long as they're not super-flimsy, you can still often reuse them even if they say they can't be reused. My first meal prep containers were essentially a white version of these saved from the local sushi place, and those things went in the dishwasher, microwave, and freezer week in and week out for over four years. I wouldn't trust them with soup, but I never had any leakage issues and all of the lids still sealed normally by the end.