IPhone Amplifier Made of Cheap Materials

You want to increase the volume of iPhone music? Do not want to buy expensive speakers? You are on a camping trip or in the office and want to listen to music?
Here you will find the answer!

What materials are needed?
IPhone
Knife
2 cups Styrofoam / plastic / paper
Plastic bottle / can
Insulating tape

Take the cups and with the knife cut the bottoms out

Cut the plastic bottle into 3 parts.
We will use the middle part that look like a tube.

We will take the middle part of the bottle (the tube) and by using a knife we shall cut a thin slot just in the dimensions of the iPhone.
The slot shall measure approximately 1.5X6 centimeters

At last - we neet to connect the cups (Those without bottom) to part of the bottle (that we cut).
The parts will be attached with insulating tape.

We will put the iPhone with the speaker side (bottom side) into the opening in the facility.
We activate the music - and what's left is to enjoy :)