So, no fabric, but a little baggie of old notions. The best kind.
This package is from the 1960's.
And in 13 different widths ... amazing.
They used it for everything, for neck facings and all sorts of surface decoration.
We have to make our own now for such variety.
At my sister Theresa LaQuey's recommendation, I have purchased a few 100 yard reels of rayon seam binding in neutral colors. It is great and I use it often for all sort of things, hems, stabilizing shoulder seams, making hanging loops, etc. etc.
If you sew a lot you might want a roll or two of your own.
So, make a trip to your thrift store, you never know what will be there.