I live in FL and I wanted a way to store my Lithium AAA, AA, CR123 and 9V batteries long term. Ammo cans are cheap and water proof. Unfortunately the stock packing of batteries doesn't allow for organized storing in an ammo can.
So I designed these in Fusion 360. When I get around to it I'll make something for 9v as well and possibly some coin cell batteries I have for odd devices. The goal is to fit everything in one ammo can width wise.