Yep, leave em in their bags and put the bags in gallon zip lock bags. Label bags with a sharpie on what catagory/type plastics is in each bag. “Big Worms”, “Finesse Worms”, “Craws”, “Creature Baits”......Simple, easy, cheap & efficient.
Thats the way I do it too. I use a bag to fish out of also, might have a little of each type i'm using. That way what I'm using that day stays on top and I dont end up with a bunch of opened bags of the same bait. good system for me.