Originally Posted by RusRus
Can I use a round toothpick to stop the fan?
If you're quick enough to get a fatter part of it near the middle in to stop the blades so that it doesn't just break off the skinny tip.
Just do not use anything metal or conductive, since the unshielded power supply is close by, and you don't want a little piece of metal breaking off and getting thrown into it.
If you get a dollar store paintbrush with a small enough diameter handle you have the added benefit of being able to use the other end to brush dust out of little places on various things, like between keyboard keys.