The loudest popper was the simplest: the two-fold popper. This makes sense because it traps the greatest amount of air. To make one, start with a piece of typing paper and fold it in half lengthwise. Avoid setting the crease too hard. Loose folds facilitate paper movement making for louder pops.
How do you make a paper popper louder?
Beano Makes- Paper Popper
How To Make The Loudest Paper Popper
Five different poppers tested to see which is the loudest and how to make the winner.