With regards to how-to make your own opium pod – “harvesting tool”
Check out the 2 pics sent as attachments.
All SWIM did was… attach three Stanley knife blades next each other with thin double sided sticking spacers in between each blade.
The spacers give just about the right amount of space between each blade and hold everything together.
Then push the front of the blades straight through a pencil rubber until all three blades protrude through to the other side and protrude proud of the rubber by approximately a millimetre.
When harvesting SWIM found that this tool worked exceedingly well.