I live in Central Jersey. WE have done a lot, but I always like to try new ideas. Here's some of the stuff we do here that's close by -

Great Adventure - we have season passes
Holmdel Park
Turtle Back Zoo
JC science museum
Adventure Aquarium - over an hour away, but did it once and LOVED it.
Dorbrook park and sprinkler park in Colts Neck
Peach picking - we live close to several farms where they do fruit picking all the time


That's all I can think of for now. Would love to hear some new ones. Maybe boating, etc.