Have three kids dueling with lightsabers on the Playstation right behind you? Want to get some work done anyway? I recommend noise cancelling headphones. This is considered more appropriate than gagging them. Or so I'm told.
Bought these puppies a while back. They also come in handy when you've got rewrites to do in ten minutes and the story room explodes in chaos when they hear one of their favorite scripts got nixed by the network.