I have been reusing these containers from a takeaway but is this

Why you should think twice before reheating food in old plastic takeaway containers

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100Pcs Sauce Takeaway Cups Plastic Reusable Sauce Box Salad Sauce Cups Condiment Container

New York Bill Would Mandate Reusable Food Takeout Boxes. The Logistics Could Be Messy. - WSJ

A Reusable Takeout Container To Replace The Hundreds You Toss Away

5 Steps To Getting Takeout In Your Own Container — Reusable Nation

Takeaway Food Container Lunch Box bento Rectangle with Wooden Lid

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Takeout Containers (Aluminum) - Napa Recycling and Waste Services

Is It Safe to Reuse Takeout Containers From Restaurants?

Plastic To-Go Containers Are Bad, but Are the Alternatives Any Better?