If you get lost or need to find somebody, break off an acorn cap as it makes a nice whistle.
Multi-purpose: Ice + Water
Freeze your gallon jugs of water to use as ice to keep things cool since it's rare someone goes for water that early on anyway.
Sleeping on the ground of a campfire is sometimes quite rocky and painful. Bring some foam floor tires and relax in comfort!
Don't just settle for everyday s'mores when you can make crescent rolls! I know what you're thinking, crescent rolls with s'mores on top? Yes please!