Coeur d Alene, Wallace, Farragut State Park, Sandpoint, are but a few places to stop. Coeur d Alene has wonderful artsy stuff and great food (I know for I eat), Wallace has mining history and a kind of wild west downtown atmosphere, Farragut has beautiful camping, a lake carved by glaciers, and much naval history. Yep, Naval history. There are still subs in the lake doing training.
Come on up. We did and never left.