The Corning Glass museum is worth stopping at for a few hours. It's really more interesting and enjoyable than it may at first sound.
I would try to work out a couple of days or so at one of the lovely state parks in the finger lakes region. Watkins Glen and Letchworth are perhaps the two best known. Ten year old me would have loved Letchworth park; adult me definitely does. (I'm sure the same is true about Watkins Glen and some of the others.)
For someone who didn't like coasters, I might consider stopping at Kennywood (in Pittsburgh) or Knoebels over HerheyPark. Kennywood has a number of unusual non-coaster attractions. Knoebels is nice in being open admission; you can use their pay-as-you-go scheme for people who want to have only a handful of rides. HersheyPark does have plenty of things for most anyone, though--including a very nice water park area, if that's of interest.
I would also suggest attempting to override the veto of the Henry Ford.