Mate, the best bits of camp gear I ever got for the family was 1) a torch each
2) a porta potti
3) their own chair each, make sure they are as good as yours.
With these few items it gives them their inderpendance, a place to sit thats theirs and comfort for the girls when nature calls.
Kids and women will never be happy digging a hole in the bush.

cheers Dirt devil.