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Lilly is fascinated by the ferromagnetic sand clock
(i.imgur.com)
embedded link (for jerboa users):
My former cat Lilly sits on the couch, watching as the iron flakes take on various forms as they rain down onto the magnet and she gently taps the glass while she tilts her head and then her body.
I wonder if she can hear some noise it makes as the bits stick together and come apart?