I always have these available around my house... I used to carry them with me everywhere.
I started using them in the 90s rave scene in SF. I would go to a party and would always bring earplugs with me, extra ones and hand them out. Especially to people who appeared to have had... a little too much. Sometimes handing a plastic bag of earplugs to someone who has had too much is a great thing from them as it helps them center a bit more.
I personally think that all concert ticket windows should hand these out with each ticket purchase/pickup.
I used to do this at Ska concerts in NY. I am a woodworker and always have a gigantic box of them at home, so it was easy to fill a ziplock.
One time I got grabbed by a bunch of bouncers and forcibly expelled from the venue - they thought the purple earplugs were drugs. Once they realized they were super apologetic and we had a good laugh about it.
I started using them in the 90s rave scene in SF. I would go to a party and would always bring earplugs with me, extra ones and hand them out. Especially to people who appeared to have had... a little too much. Sometimes handing a plastic bag of earplugs to someone who has had too much is a great thing from them as it helps them center a bit more.
I personally think that all concert ticket windows should hand these out with each ticket purchase/pickup.