My personal favorite is a campsite on North Dome: this is a hidden gem, both in terms of a hike and a campsite.
The campsite is on North Dome, which is opposite the valley from Half Dome.
This means you get a view that you can't get on Half Dome: a view of Half Dome itself.
I prefer camping outside of the Valley, because the valley gets so crowded and feels too developed.
I personally like the campsites in the upper valley (White Wolf, Tuolumne Meadows), it feels a lot more like what wilderness camping should feel like.
This is the camp for those with children who enjoy fresh-air and mud. Bring your bikes for family jaunts on the many cycle paths; likewise, buckets and spades for the nearby Blue Flag beaches in Swanage and Studland.
The South-West coast path is close, as is beautiful Corfe Castle.
Alton Towers and Gulliver's Kingdom are easily accessible if the children get bored.
Chatsworth House, the Blue John caves and Uttoxeter race course aren't far, nor is the lovely Carsington RSPB reserve.
Weird and wonderful sculptures mark out individual pitches in this arty garden-cum-campsite - there's even a flock of wooden seagulls.
It's also home to free-range rarebreed chickens and farmyard animals youngsters will love.
Budget-conscious walkers, climbers, mountain bikers and families will be thrilled by the beautiful Duddon Valley.