Quantity   Component name
3 × LED Fiber Optics / Emitters
3 × 680ohm resistor
1 × nrf51 breakout board from Tindie or whereever
1 × USB->3.3V supply USB A captive cable DC-DC supply to provide 3.3V
1 × Wooden round base From IKEA
1 × High tension glass insulator Recovered from road works
1 × Plastic round lamp holder from an old ikea shade holder