We all use the tools we are familiar with. Smokey uses a screwdriver to tighten a screw, I will sometimes use a knife. Real gardeners use a wooden or bamboo stake to keep a houseplant upright, I use a knitting needle. Others might have used string or twine to hang the political signs on their car in parades last summer, I used yarn.
Yarn is very handy.
The zipper tab broke off one of my fleece vests several years ago. Eventually I figured out that a coilless safety pin worked perfectly as a substitute tab.
But the appearance was makeshift and non-pleasing, although I did appreciate being able to zip up the vest again. I dug in my sock yarn stash and came up with some yarn that [almost] matched the vest.
Yarn to the rescue!
The other alternative use for yarn actually involved knitting. I have an oversized denim workshirt that I love because it is perfect for layering when a t-shirt isn't enough but a sweater is too much. Over the years, however, it had acquired a couple of rips.
Those rips have been there for a l-o-n-g time and never really bothered me. But suddenly inspiration struck. I grabbed my needles and a crochet hook and...
Related: I once did something kinda similar for a favorite fleecy top. Fleece with new cuffs.