Fractal Genetics has the most stealthy packaging. Not the most fancy but it protects the seeds very well and fells flat thru the envelope, not sketchy like a vial.
To me a vial seems suspicious thru the envelope.
thats the way they should be done. personally i think the way they are shipped should be considered to this. this is time consuming if u had to do it by hand.measure the demensions and press punch them on a hydraulic machine. wouldnt be too hard to create a die and do. i dont have access but im sure someone here works in the trade that can help.