That's a pretty awesome idea. I normally think "pig" when I think animal TF nose, but since you've already got one in the pipeline already, how about an old Process favorite: a Pleasure Island-style donkey TF!
Larry and his girlfriend go to a hot new place called Pleasure Island where the drinks aren't watered down, they still let you smoke and you can have fun all night long. Then the TF starts to happen from the tainted beer and cigars. They initally laugh at each other because they both look like they have donkey ears, get a lot more worried when they start to bray and grow donkey tails. (inspiration should be taken liberally from the scene from the Disney version of Pinocchio with Lampwick changing) Not sure if there is a good opportunity for nose TF here, but you could always take a page from the title character of the movie and have the tainted beer make her nose grow when she lies...
Venue might be a problem unless you have a bar setup in the basement you can use, but I think the general concept would work well for a POV video.