> 4 plastic boxes
> Some wire
> Some tape
> A computer fan (it has both a fan and a motor in it) OR electric motor + a fan/turbine connected (make sure the motor goes not above 6 volts). For this project, I didn't have a computer fan, although that would have made things much simpler. I had an RF 310T 11400 motor available here and a small turbine sort of thing
> An old USB cable (any sort of USB cable; you'll be stripping the wire and will only keep the male end)
> An icepack/small container which you will freeze water in
> A laptop/USB compatible power brick
> Some scissors/ a Swiss Army Knife
Step 1: Make Holes in the First Box
Step 2: Prepare the Second Box
Step 3: Prepare the Third Box
Oh, and you can always glue all these boxes together to keep the structure stable, but I didn't really find it necessary.
Step 4: Prepare the Fourth and Final Box
Stack this final box on the third box.
Step 5: The Wiring
So what you have to do is take a USB cable and cut it open, taking care the end you cut is not the male end. Once cut open, you'll see that there will be 4 kinds of wires inside; red, black, green and white. The green and white you do not need, but you need to strip the red and black ones, and connect them to your motor or computer fan wire ends.
Step 6: Turn Everything On
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