How to make a Microphone from Cardboard that Works

Hello Friends in this video i am making a cardboard microphone(Mic) that works really well ... and it very easy to make at home ... Shop on amazon US - UK - ( Just for support ) hope you guys will like it ... Music : 1 - ukulele ( ) 2 - retrosoul ( ) 3 - cute ( ) 4 - Itro & Tobu - Cloud 9 [NCS Release] ( ) __________________________ Thanks for Watching ...