Herbs freeze well.
I put mine in jars and close them tight and there’s no moisture loss.
I save and use primarily spaghetti sauce jars as the lids have the built in gaskets. That way I’m not using canning jars that I need for actual canning.
We don’t have municipal trash service here so we burn anything that will so I’ve got dog food bags sitting outside full of glass jars and bottles. I was thinking the other day that I might need to to put over seedlings if we get more snow/sleet/freezing rain. I should probably grab all the bigger ones like that and simmer to clean them up and save them for multiple uses. Pickle jars have the gasket too.
I’ve got an old hand vacuum pump with rubber adhesive strips, As Seen on TV. You punch a tiny hole in the jar lid, put the rubber seal strip over it, hold the pump end over that and pull a vacuum on it. The vacuum sucks down and holds the seal tight.
I also have a few plastic containers made for the hose attachment on a food saver but I no longer have a food saver.