I am doing a science fair project and i was wondering a cool experiment with magnets?

Question

The magnet experiement can be anything, just as long as its a reasonable price, 30$ or under. I need to be able to present in front of my class, if you have any ideas on that, please say to.

Thank you

Answer 1

Movement of items.e.g. elevator system or train ar car system. Use the opposite poles to pull and the like poles to push.