Ambient rotating magnetic fields!?!?!?

[victore]

Sorry to disappoint you, there is no magnetic interaction here.

The thread, without any load attached to it, is already flexibly wound in a spiral. If you put any load on it (try with something small but heavy), it will unwind the thread due to its weight pulling it down... and this generates the spin.

If you place a Neo magnet on it and there is some metal below on the ground, the pulling and unwinding effect will be exponentially higher.

[sparks]

If you have alot of metal down there and the thread starts off really wound up and the magnet is massive then it will overshoot and start winding the thread back up again in the opposite direction.  The magnet will bounce up and down.  If the plate is moved when it is in overshoot then things get interesting.  You have yourself an oscillator.