Chad Bredahl just sent in this smart tip about using a seat belt pad as a deadcat. (Deadcats protect microphones from wind, so if you are shooting video outdoors, it kills a lot of the wind noise).
Deadcats are not that expensive to begin with, but I guess auto part shops are easier to find if you are on a hurry and need a quick solution.
If you think this is crap, skip to 2:10 to see/hear the effect of the pad on wind noise, I was surprised on how nicely it works.
Thanks for the tip, Chad.