Yes, a map and compass, but the problem with Kinder and the peat bogs is being able to maintain your route and direction. Often best to do a walk around the perimeter of the Kinder plateau on a clear day - you get your good views and at least you have a reasonable idea of where you are.
Overheard at the summit of The Cobbler a few weeks back..."Isn't it great being up here, so remote, at one with nature. Would be better if there was a coffee shop with wifi access"...