Cheshire Cat Help

[silvershoct.livejournal.com]

So for Halloween I'm dressing up as the Cheshire Cat and my boyfriend is being the Mad Hatter.
I have figured out how I'm doing everything except for the cat tail. My boyfriend's mother offered to knit
one for me but I want it to be fluffy like the one in the Disney film. How would I do this to a knitted tail? I'm afraid that if I stuff it it'll be too heavy.

Thank you!

-Ashley