Still got mine from when I used to work on a farm, again must be 20 years + old.
Working stacking bales one year found a nest of baby mice under a bale, so decided to stash them in my pocket, to release them latter in a hedgerow.
Completely forgot & few days latter arrived to work to see the farm picup alarm going off, with everyone trying to switch it off.
Apparently some mice had got in and destroyed the electrics & chewed a hole though my Barbour pocket which I had left in there 😉