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.
(..) just don't call me late for dinner, you get it? Okay! Not a shaker? Are you a hugger? I'm a killer. Warning! Plutonium- is a radioactive material and is highly explosive. Excuse me. There's more room on the sidewalk. Dodge, please, dodge! A little help? A little help, please. (..)2014 The Amazing Spider-Man 2