Here are the absolute basic necessities, adaptable for families and experienced campers alike.
All the Permits
Camp safely and legally by making sure you have all of the right permits for everything you want to do -- camping, fishing, hunting, whatever.
First Aid Kit
Because you don't really want to have to have to do the Survivorman thing. Here's a list of 10 things that should definitely be in there, from Outdoor Life. Here's a list from the American Red Cross.
And with help from Positively Splendid, you can make a cute little holder for everything.
Source: positivelysplendid.com