If you find yourself within a day-trip of Mansfield (MO), I recommend a visit to the Laura Ingalls Wilder Historic Homestead. The homestead consists of the farmhouse Laura and Almanzo built, a museum devoted to the Ingalls and Wilder families, a gift shop and vegetable garden. A brief drive will take you to the Rock House, which Rose Wilder Lane built for her parents.
The farmhouse remains as Laura left it in the 1950s – you are literally stepping back into time. Admission price includes a guided tour of both homes and entrance into the museum. Current admission prices are $10 for adults and $8 for seniors.
For more information: http://www.lauraingallswilderhome.com/