“The Quotidian Magnet Propulsion Pen boasts a name that’s as puzzling as the mechanism within. Pull the cap off and nothing happens. But stick it magnetically to the pen’s tail end and the pen nib is propelled out, readying the instrument for writing. Its mechanism employs both magnetic attraction and repulsion to pull this off, featuring several axially magnetized neodymium magnets in its cap and…” (via )
