I just love Dan Nicholas Park. It is fun for the day, great for little ones. Take your picnic basket with you and rent a table.
It is an inexpensive way to spend a day. Bring the grandparents, you can even bring a dog. The kids enjoy the rides. You get the tickets in the gift shop at the train ride. It is better than a busy amusement park. Lots of things to do: petting zoo, carousel, mining, miniature golf and more. Kids can bring bathing suits, there is also a spray fountain.
You can even spend the night in one of the cabins.