Re: U.S.S. Curry and other ships from DS9
"Reading Rainbow" did a TNG special once, and it partly featured behind-the-scenes effects stuff.
As I recall, the little cylinders were made from disposable razors. I think they were meant to be workbee-style manipulator arms.
"If you can't take a little bloody nose, maybe you ought to go back home and crawl under your bed. It's not safe out here. It's wondrous, with treasures to satiate desires both subtle and gross; but it's not for the timid." - Q