Cardboard Sound Amplifier

Make your sound louder with every day materials

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Step 1: Gather Materials


-Box Cutter

-Spray Paint (optional)


Toilet paper rolls

Step 2: Cutting

cut a rectangle from the cardboard and trace the bottom of the phone that parallel with the longer side of the rectangle.

Step 3: Make the Base

Roll up the cardboard and glue it.

Step 4: Add Support

Cut out a smaller rectangle and glue it to the back for extra support.

Step 5: Extra Distance

Cut a hole in the toilet paper rolls and glue them to the project

Step 6: Paint

Take it outside and paint it.

Step 7: Enjoy

Put your phone in and play your favorite music

Cardboard Contest 2017

Participated in the
Cardboard Contest 2017

1 Person Made This Project!


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2 Discussions


2 years ago

Those are a great option and definitely cost effective :)


2 years ago

wow that was cool dude