You can get like 10 small mason jars for $8.00 at the grocery stores...why buy a 'weed jar'? (outside of the styling).

If you have a gun store near you, ask them if they have Desicant. Some stores only have these humungous packs of it but others carry smaller packs that are about the size of those instant hand warmers you see in the winter. Take one of those and add it to your jar...sucks up the moisture. I keep a large one in my ammo box to keep my ammo dry and fresh and said, "Why not?". Went out and found some of the smaller packs and I keep those whereever I keep my stash to keep things fresh. Plus, the desicant packs are reusable...you just throw them in the oven to 'recharge'.