It would be a heavy card, but it could definitely be a card. It's a prototype for a bit of analog fun that is surprisingly calming. It's definitely kinetic it's also an entry in the Artful Times Kinetic challenge. And Simon Says Scratched Up, the iron filings in use especially look scratched up.
It's iron filings, some googly eyes and some elegant (Anna Griffin) papers. It is heavy (well it's iron filings) and they really needed to be in a sealed form. I used four sheets of heavy cardstock glued together rather than the foam tape I usually use for shaker cards. I also used a sturdy piece of plastic packaging for the window.
Put it in an easel and it can also be a message board.