hey - thanks a lot everyone.
neostrider - thanks! - yeah, i'd been thinking about a trash bag - so after your suggestion, made a quick crappy one in zbrush last night - needs a bit more work on it tho.
not really sure what kind of stop sign you're describing - maybe a pic? - though my scene is getting kind of crowded.
shadowspy - thanks - i've been using maya for about 2-3 years now. i've got some pics of my stuff on my blog.
here's a shot of the trash bag.