My parents never felt that I was college 'material'. [=that I was someone who should go to college]
Her boss regards her as executive 'material'. [=as someone who would make a good executive]
The comedian gets his 'material' from things that have happened to him.
(..) Get it off. Why did you make me put that down? No. We need a medical dictionary. Like a patient gets difficult, you quone him. You want some funny material? You ought to come down to where I work. There's a sitcom. You must have quite a time down there. - We got plenty of time. (..)1990 TvShow: Seinfeld Title: The Stakeout Season: 1 Episode 2