[MichaelGG]

I get the beige "Hearos" off Amazon and they seem rather comfortable while providing a fair amount of volume reduction. They won't completely block out people being rude on flights, but they did well enough that I was able to sleep nicely for a few hours on a recent flight.

They're cheap and come in packs of 20. So I stash a handful in various places so I always have some accessible. In particular I keep a few in my essential medicine bottles since I'll have those while traveling. I find I can reuse them a few times, but if they feel off or dirty the cheapness means I don't hesitate grabbing a new pair.