The game where you get people to stay quiet for the longest period of time, the silent game.
That's nice question, The quietest room in the world is your mind when you are sleeping or while you take rest.
I don't know if it's the quietest hobby in the world, but I bet stamp collection is pretty quiet.
The superlative form of the word quiet is quieter
Blueprint for Green - 2007 The World's Quietest Room 1-15 was released on: USA: 2007
The world's quietest room is located in Minneapolis, United States. It's used for research, so I'm not sure if it's open to the public.
McDonnell Douglas MD-520N aircraft
A digital clock is the quietest.
The quietest in the group are all of them.
quietest, quieter
The superlative form of "quiet" is "quietest."
Even in the Quietest Moments... was created in 1919-11.
The quietest trimmers are electric and don't produce much "rumble."