Eh... it'd be a good freebie.  Ducts might make for... okay tv/movie viewing but they are hardly realistic (in terms of size) and you are severely limited by what kind of shots you can do. 

Lighting would also be a problem.

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)