The backcountry varieties of Plastic Plates Bowls
Disposable storage containers, while quite budget-friendly, are pure junk as far as Airline Cups actually being useful food storage devices.
Not to say they don't store things adequately. They hold 'em just fine.
However. They totally fall down on the job when it comes to the freezing and thawing process. And they are very neglectful at being airtight.