I've been getting listicle spam/ads with a CTA promising to reveal why you should always carry one of these in your wallet. To this day I never found out why that is!

In Australia they are occasionally used as a temporary fix for plastic sandals when the piece between your toes pulls through the base you can push it back through attach one of these around it on the bottom and it will hold long enough for you to get new ones.

And for a cheeky example, here's a jandal you can buy with the plugger + bread tag combo from the factory

https://heresgolden.com/products/golden-g2-mens?variant=4362...