For someone that builds props for more of a hobby right now. I can out right tell you we hack crap together. Look at my post earlier, Its a broken stapler, and a metal tube, with some wire covers, and more hack stuff to be added to it for effect purpose only. All fiction, no fact, and to the untrained eye ultra cool sci-fi prop gear.
the com qui gon gin spoke into when on tattooine, was a womens leg razor, paited silver and a few buttons glued on it...and the blade taken off... one of the star trek away shuttels were made of disposable razors.
I have a super sweet prop ship i made...out of a computer mouse, and its engins..they are the wheels off the mouse. my brother loved it so its now sitting on his shelf, if things i gift him.