A rare earth magnet for use with magnetic nail polishes. This magnet has a bar magnet on one end and a smaller round magnet on the other. The round magnet actually has the reverse polarity so it pushes the magnetic particles away from it. When painting your second coat of polish on, hold this magnet with the narrow side down as close as you can to the wet polish. You should see it pull the magnetic particles and form a magnetic line.
You should probably keep it away from laptops and phones because magnets are known to scramble them.