As we plan out our trip to Mt Rushmore and Yellowstone, we are trying to stop every 300-400 miles to camp (with 5 kids 9 and under, they need to get out and play to be happy!) So, we're thinking about Kearney NE as one of the overnight stays. A quick search for campgrounds didn't come up with anything fancy (the kids love campgrounds like Jellystone or others with lots of fun amenities) and that's fine. But do you recommend any particular campground? Or is there another stop off I-80 in NE that would be better?