Since Christmas is coming up..
I've been seeing clothing makers use the older method of creating fur-ruff (eg. along the rims of santa hats or collars/hems of certain jackets) which consisted mainly of flat surfaces textured with 'feathering', with alpha pixels. Trees have been done with this method as well (and creating the recognizable 'star' when viewed almost directly from above).
This method causes several visual kinks. The first is that 'star' mentioned before. The second is the alpha-bug, in which surfaces which are supposed to appear 'at the back' show up in front. Occasionally, things even flicker as the camera views over overlapping alpha surfaces. Example in the first attached image.
The method generally creates a cross or a star cross-section, depending on the number of prims used.
The method I'm suggesting (which I will apply onto a torus form) involves a core, solid torus (shaded green for visibility in attached image 2). Sharing positions with the core torus, you will see a number of of them textured inside and outside with fur. The objective is to shape and size them via scaling, and hole-size X and Y, so that they protrude out from the core torus enough to suggest a fur-ruff effect (demonstrated on the right side of the torus). The core torus can be colored a *slight* bit darker to contrast the fur better. Attached image 3 is the final result.
Hope this helps someone out there.
IM for texture or example objects.