Each bulb took about 20 minutes to do and the parts were all recycled of other old lanterns and projects. The idea of using the PCB as a blade for the light fitting was borrowed from 1up with his smallest USB LED ( https://www.instructables.com/id/The-Smallest-USB-LED/ )
I hope you find this useful and as the video shows, it definitely works and was well worth the effort.
Step 1: Step 1 - Parts
1 x 1k Resistor
1 x strip of PCB 2 tracks wide
This is the shopping list per bulb.
Step 2: Step 2 - Solder Together
Step 3: Step 3 - Finish
Total cost of project - 0.00