@psychopoesie
My most surprising fabric bonus was when I grabbed a boxing bag thrown out for council cleanup.
My daughter thought she wanted a boxing bag, so ta-da!
One of the hanging straps had torn, and when I unzipped the bag to look at repairing it, I discovered that it was stuffed with fabric offcuts 🤯
OK, there was probably 5% sand as well, and lots of unusable scraps, but I still saved lots of fabric from an undignified percussive softening process 🤪
Re: the hi-vis. Some workwear is made to industry-specific standards, and must not be repaired, so you can find items that look near new, or only need a simple repair. I offered to mend a friends trousers, and was told how even the thread and buttons have to be certified against high-voltage for his job, and damaged clothing must be discarded not repaired. In some circumstances a visible repair can be a sackable offence.