Why Altoids? The tins are universally available, well made and designed to keep the stuff inside them intact and safe from crushing. With a little work, you can even make them waterproof. They're also designed to ride in a pocket or glove box, under the seat of a motorcycle or even on a knife sheath. They are extremely popular, because the Altoids tin in the perfect size and shape to contain whatever you please, and still fit in your pocket.