Here is the example of a work in progress script that generates a curve from a particle and at the same time it can auto attach any brush from Maya and animate it. The user can control some attributes to change size of the brush and some other settings. It looks simple but it can generate really interesting effects!
The left video shows an example of a particle system setup of a scene, without the script working.
On the video at the middle, the script was applied and it's working, so it's generating a curve for each particle and generating a brush for each curve... And it is animating each of this brushes.
And on the video at the right, is a test render of this scene.
Here is another example of the script working
with a different brush.
Final render from Dupont Ad
This a final render from a scene
in the Dupont commercial