I made my own fox tail outta that fake fur stuff.
It looks really real too.
And for once I did a good job
I actually made it strong and used those rock climbing clips (the ones you get at the dollar store which are not for climbing) to attach to my belt rather than using safety pins like the first one I made. I have two of those so that it wont move (cuz most pants have a belt loop at the very back, so I put one clip on either side and the tail stays in the proper position).