Use a water bottle as a waterproof container
Water bottles are valuable items to take camping or hiking, not just because of their obvious function of carrying water. In fact, they are also an ideal watertight container in which to store important items and keep them safe from rain.
Matches and first-aid kits are supplies that should always stay dry. There’s no better place to keep them in than a seak-tight, waterproof water bottle. Just remember to take the items out before using the bottle as a water bottle.