Step 1: The parts
A (used) ball point pen. I acquired one with a metal nozzle as it would probably last longer.
The spool of enamelled wire was from a relay, 12 V changeover contacts - the rest of the relay was dismantled with care not to damage the spool of wire. Other sources are transformers and rf chokes.
Some two component epoxy to cement the needle to the nozzle.
A screw long enough to hold the spool of wire (not shown)