There's a guy on YouTube who goes by the extremely-appropriate handle MagnetNerd. He makes videos of himself doing stuff with Zen Magnets, those spherical neodymium magnets that have been banned in some places due to safety concerns related to children eating the magnets. (Note: do not eat magnets.)

Anyway, safety issues aside, this is pure weird fun: MagnetNerd set up a cube of 10,648 magnets and then smushes it on camera. Enjoy:

If you like that, go look at his stuff. (I dig the magnetic levitation demo.)