Get Smart
If you have seen the movie Get Smart you would already be very familiar with the Cone of Silence, a contraption or a kind of helmet worn to eliminate the silence around you. For instance, if you want to tell a friend a secret and you are in front of a lot of people, you just have to tell your friend to wear one and you can tell your friend whatever without anybody knowing about it.
This is a gadget that may look a little strange but very interesting and can be very useful in times when you need privacy and some silence amidst the very noisy crowd.
