I would look for some kind of hanging solution with a bracket or maybe just some string/leather ... (your permanent magnets aren't moving). Hard drives contain small but very powerful ...

RAMBO allows the laser pulse, the magnetic field pulse and the spectrometer to work in sync. RAMBO is possible, he said, because of Nojiri's development of a small and light mini-coil magnet.

The Bagnet is a small and mighty magnet for your bag. Two durable magnets wrapped in real leather make it easy to keep your hands free and your bags off the floor. And you don’t have to worry ...

the manipulation of very small volumes, or develop the systems generated through this project to produce fluid analysis devices based on magnetic properties, or at least exploit those properties ...