Water Bottles. Reusable, identifiable, washable, attachable, freezable, foldable. Wha? Foldable? Yes, foldable. After you use the vapur, instead of carting it around and dropping it, just fold it up. And it's made from quality material. Wash it, reuse it. It won't melt or warp. The only thing you might have to worry about is someone getting jealous and snatching yours.