: Fold about half an inch of each end of the strip outward to form a "T" or bridge shape.
: Place your mouth against the paper and blow firmly. The air rushing through the slit will cause the paper to vibrate rapidly, creating a loud "screaming" sound. Alternative: The Paper Popper Screamer Free Download
: For decorative "screamer" characters, platforms like Pinterest host templates for various papercraft figures. : Fold about half an inch of each
: If you have a 3D printer, you can download free "screamer" whistle files from sites like Thingiverse. Screamer Free Download
You can create this loud toy in seconds using a small scrap of paper.