This is a new bag I just finished. I took a plastic bag of strings I have from a friend, the leftovers from pieces her mother had cut for quilting. I picked summery colours from the bag for ironing. There were obviously leftover scraps from making summer dresses, curtains and cushion covers.
The string blocks go all way round the bag. I used a foundation and added a thin batting.
I measured the string blocks and the solid linen/cotton. Just to make sure this would qualify for Stephanie's challenge and not only my "Use your Stash", I made an inside pocket with the last strings of these colours. This picture is rotated; I don't make such narrow pockets.
Then I sewed something I felt I needed last year: a holder for my Epipen. I'm allergic to wasp stings and need to carry a ready to use adrenaline syringe with me, especially outdoors. The syringe is too long for any pocket, and I don't like to carry a handbag in the woods or garden.
This little bag holds just the syringe, and I added a catch for keys and/or phone, if I'm totally without pockets. The strap is long enough to reach from one shoulder under the other arm or behind my back. And yes, everything is from stash! I also saved the ends of the strings I cut making the blocks, they make perfect tiny squares for some future project. (This is why there is no end to my stash.)