These are loaf locks. Very handy, and as you can see, quite patriotic. Okay, I deliberately chosh those three colors for this photo.
If you are think "loaf" as in "loaf of bread", you are absolutely right.
But these clips are useful in other applications. How about clipping closed the lips of that tiresome individual who will not cease talking!
But I use them to close packages of shredded potatoes and grated cheese, and ...
frozen peas, and ...
even fresh fruit.
I'll bet you could come up with even more uses.