I'm taking my sister in law and her boys(2 and 4) camping for their first time. Other than the usual hunting for "cool rocks" and fishing with no hook what are some fun things to keep the kiddos bus...
My young boys just like being outside. If there's sticks out there, they will find them. If there's a fire, the sticks will be in the fire. They do better in places with room to spread out than in tight rv parks. Bikes work too. My boys like to help with trailer setup and tear down.
We also bring card games, board games, puzzles, etc, for bad weather.