This Game is meant for Boy Scouts.
Decide for yourself if it is appropriate for your younger scouts or not.

3 pieces of paper and pencil for each scout.
3 paper bags.

Similar to the boardgame of Clue!, in this game, each scout needs to combine a victim, location, and weapon to kill off another scout.
This game may take days to complete so it should be ongoing as part of a weekend retreat or week-long camp.

To start, give each scout 3 pieces of paper and a pencil.
Have each scout print their name on one piece of paper.
Have each scout print a weapon, such as 'pencil', 'pinecone', 'wristwatch', ... on the 2nd piece of paper.
Have each scout print a location around the campground or building on the last piece of paper - 'bathroom', 'firepit', 'front door', ...
Put all the names in one paper bag, all the weapons in another, and all the locations in the third.

Have each scout pull a name, a weapon, and a location. Check the name immediately - if it's your own name, draw again.

Everyone must keep their three pieces of paper with them at all times. If this is not practical, they need to memorize the three items and play by honor.

Each player's goal is to get their weapon and victim to their location and announce to them that they've been eliminated or show them the papers. This 'kills off' that player. The 'killer' inherits that scout's three pieces of paper and plans his next attack.

The last scout left, or the scout who killed off the most players when time runs out, is the winner.