A cardboard tube
Old ventilation fan
A glue gun
Step 1: Step 1
Figure out which of the 2/3 wires in the back are the positive and negative ends.
Step 2: Step 2
These sticks will help make the fan stand upright.
Step 3: Step 3
Step 4: Step 4
Put in the 'V' end of the stick inside of the cardboard tube and apply glue inside to keep it from moving around.
Step 5: Step 5
Step 6: Step 6
Attach the positive end of the adapter to the positive end of the fan. Do the same for the negative. (ignore the yellow wire :P )
Tape the wires together and you're done!