Glass jars are the way to go, and even still THC sticks to them too.
Advantage is they are not AS porous as plastic, but porous still.
Plastic will leach into the taste after a prolonged storage.
Lastly, Wal Fart sells the big one gallon cookie-like jars with the vaccum sealed top, plus a plethora of sizes.
Anyone growing a little weight for personal storage or otherwise should really try to think everything through as much as possible, before starting to grow or at least plan accordingly as you go along.
No offense, but why grow 12lbs and have no idea how to or what to store them in !?
I bought a dozen 32oz jars along with all my equipment, before I even planted my first indoor seed.