My local Thai restaurant carries them. They are great and lock so tight you almost need a bottle opener to pry them open. For awhile there I was ordering Tom Yum a little too frequently so I decided to research and find my own bulk supply.
I found mine at WEBstaurant Store. The common name for these containers are called Deli-tainers. A pack of 24 sells for $5.99
I also bought the lids (yes, they are separate). They come 60 to a set for $4.99. At first I thought, wow, 60! But you know how it is. The lids are the first to mysteriously disappear and if one cracks you have back up.
Last Thanksgiving I put everything in them, all my chopped prep and stacked them according to recipes. For left overs I sent containers home with family (there are also smaller containers available) not worrying about finding the right size or if I was ever going to see my Tupperware again. It made pre-dinner planning and graciously doled out left-overs a snap to hand out.
When the big box arrives a couple days after you order you might open it and think, 24 containers are a lot more than I thought it would be but you’ll be surprised how quickly they will dwindle down if you entertain often, make soup or spaghetti sauce to freeze, or host a soup swap. I also use them to hold all my icings for cookies and cupcakes and being opaque it lets me see the colors at a glance.
With the picnic and BBQ-ing season beginning next month I thought planning to be organized would be good place to start.