Although cardboard boxes may seem like a no-brainer, ... And if you need to keep originals safe, you can store them in a waterproof, security-safe box, which is also theft-proof.

Managed by the office retail company KOKUYO, Shop & Café “THINK OF THINGS” in Tokyo now offers high-functional cardboard boxes that are waterproof enough to contain liquid inside called CARTON 2.0.

For example, the basic rule for fiber is paper, cardboard and cartons ... The three most common types of waterproof paper are: 1. beverage cups (e.g. coffee); 2. boxes for the fridge/freezer ...