I got the idea of making this when I opened an empty 9v battery to see how it looked inside and i wanted to make something from the steel box. I had an old RC plain that was not working so I took one motor from it and the switch, and I made an small portable fan that was really powerful actually.

Step 1: The Box

I opened up an empty 9v battery and used the steel box that the 6 small batteries were in.

Step 2: Parts

The parts and tools I used for this project:

* Mini RC plane motor

* 2x AAA batteries

* 9v battery

* Switch

* Flexible steel pipe

TOOLS

* Tape

* Hot glue

* Lighter

Step 3: The Battery

We are making an 3v battery for the fan so you need to have an steel plate or an wire thats connected to + on one battery and - on the other. Tape the two batteries together and owed the connection.

Step 4: The Fan

Take the two wires from the motor and put them into the flexible pipe. glue the pipe and the motor together and put tape over it, use an lighter to make the tape stick better.

Step 5: Connecting

At the bottom of my 9v battery there was an plastic plate that I used but if there wasn't any on yours than you can just cut one out that fits from cardboard or something plastic. Cut two holes in the plate so that your switch and pipe fits it.

Glue the parts on and connect the wires to the battery and switch.