Each spring, as the school year winds down, parents around the country are searching for alternative summer day trips to take with the kids. When soccer camp is over, rain prevents another day at the pool and the exhibit at the children's museum is a repeat from last year, it may seem as if all options are exhausted. This list highlights top factory tours for children around the United States that will appeal to both kids and adults. The behind-the-scenes view of everyday consumer products teaches kids about the number of people needed to make one crayon or even a scoop of ice cream. And the promise of free samples usually offered at the end of the tour is enough to keep one's attention for the duration of the presentation.