These key racks are minimalist and highly effective: designed with super strong neodymium magnets, KeyCatch can hold up to three pounds. That means even your friend's huge key ring with all the ...

This adorable cloud-shape key holder has strong built-in magnet that holds on tight to your key ring, and it’s super easy to install: ... This Ledge Shelf With A Built-In Key Magnet.

Once cooling was complete, the ring had to be powered with 5300 amps of current to produce the magnetic field. This was another slow process, with technicians easing the ring up by less than 2 amps ...

The magnet that was tested last week was about three meters tall and half that wide. It's powered by coils of a high-temperature superconducting material called ReBCO and operates at about 20 Kelvin.