Food, toiletries, cleaning expenses (laundry, dishes, etc), entertainment expenses (movies, music, magazines, going out), clothing, school supplies (pens, paper, etc). If the person is living in an apartment there would be rent and utilities. If the person joins an organization (such as Student National Education Association), there might be dues.
For instance, books and supplies for on campus in California universities is about $1455 to $1656 while miscellaneous costs are around $3000. For off campus it is about $2000 for books and supplies and $4000 for miscellaneous expenses .