R
rbt
there is a plastic that looks like corrugated cardboard. I think it used in like
" FOR SALE " signs and wrapping ceramic/glass products in. Those little corrugations with cotton stuffed in the ends hold seeds perfectly. just an Idea
This worked for me in 9"x9" exit signs that had to install on where I was going and the nice thing about the corrugation it allows for keeping strains separate and if mailed wont crush.