I don't find earplugs comfortable, but you got me thinking and I might buy a set of hearing protection earmuffs (http://www.amazon.com/3M-Peltor-Ultimate-Hearin

I don't find earplugs comfortable, but you got me thinking and I might buy a set of hearing protection earmuffs (http://www.amazon.com/3M-Peltor-Ultimate-Hearing-Protector/dp/B000PW98WO/ref=sr_1_5?s=hi&ie=UTF8&qid=1407354895&sr=1-5&keywords=hearing+protection http://www.amazon.com/3M-Peltor-Ultimate-Hearing-Protector/d...). As a bonus, I think having a set of bright blue earmuffs on would more of a visible "do not disturb" symbol than earplugs. Thanks for the idea. :)