Personal belongings; items owned by an individual (private property).
机の上の私物は全て社員の物ですか？
Are all the personal items on the desk owned by the employees?
引っ越しの前に私物を整理しておこう。
Let's sort out our personal belongings before moving.
会社の備品と私物は混同しないでください。
Please do not mix company equipment with personal belongings.