Separation process topics?

Hello, I really need help. I have a topic for chemistry by next week, and I have to give a presentation on separation processes, such as coffee, perfume, alcohol, and so on. I can't use those topics because a classmate is already using them. Briefly again, for example, coffee, separation processes, beans, or something like…

Which mixtures can be separated using magnetic separation and what technical terms are used?

I wasn't sure which mixtures (eg suspension, solution, etc.) can be separated using the separation process mentioned and I wanted to ask if anyone knows any technical terms related to "magnetic separation". I look forward to any reply and thank you in advance.