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...
A float and a hook. You cast it in and let the child reel in the fish hopefully. However the 2 year old might be a stretch to entertain other than playing in the dirt. :)
Scavenger hunt is good. Different colored rocks, leaves, etc.
Wiener roast, smores, firewood gathering, hiking, license plate searching for different states if they are a little older.