I keep a pair of high-quality earplugs[0] on my keychain. They're completely invisible and always there when I need them. I find myself using them about once a week.
I love earasers. Best I've used so far. Super comfortable, tiny, and discreet. No one even knows you're wearing them, and they work so well for concerts, without making everything muffled. I use them for everything with noise at this point,mowing the lawn, snowblowing, etc.
