Tinderbox, Waterproof

This waterproof box contains flint and steel, along with a small supply of wood shavings for kindling. The box keeps the contents dry during a rainstorm or when submerged underwater. Once per round, a character can attempt to start a fire using these materials. A roll of 1 or 2 on a 1d8 is necessary to start a fire in normal, dry conditions. A 1 on a 1d8 is necessary if the area is damp; the DM may require more difficult rolls (for instance, a 1 on 1d12) in wet terrain, or may rule that a fire can't be started at all.

[Complete Ranger's Handbook]