|1. You need two plastic containers, without yogurt, a long string, it can be fishing line, and a friend.|
2. Step one. Make little holes in the bottom of the containers and pull the string
through the holes, make the knots.
|3. Step two. Take one container, your friend takes another. Stay opposite to each other. The string should be tight. Speak to your vessel, the friend will hear your voice in his one.|