Depends what you like....

I'd say Arbor Low is a must see, Bullring in the north peaks as well. Nine ladies is easy to get to but one of the Eastern moors (Eyam or Big Moor) would be more satisfying to a stonehead for an embanked circle.

Minning low and Five wells for tombs in the peaks, The Bridestones if you are over Congleton way.

Oh and Gardom's Edge with Meg's Walls, rock art etc, but not a quicky.