This is my first MAGNET slider card. The concept is the same as with a penny, but you can actually take the front embellishment off and use as a refrigerator magnet. It was actually quite easy to put together, but the magnets do make the card heavier, so I question the cost of mailing one. I cut the sentiment from Cricut Design Space.
I should say that both the train has magnets and the rectangle has magnets - they attach to each other.