[andrewaylett]

I carry Etymotic earplugs with me at all times; they're cheap enough not to worry too much about losing. I also recently got myself a pair of Plantronics Backbeat Pro headphones -- they're great; pretty good at blocking background noise turned off, really good with the noise cancelling on (even in the office) and not nearly as expensive as the Bose headphones. And they sound great both with a wire and on Bluetooth.

I should probably buy some Plantronics stock, shouldn't I? Just a happy consumer :).

[zimpenfish]

I have a couple of pairs of ER20s and some ER20XS for commuting, gigs, noisy places, etc. They do a good enough job that I can go to e.g. a Rammstein gig and not suffer afterwards (tinnitus flareup, headache, etc.)