Hello sketchers-welcome to New Jersey!
I live in the Princeton area so I've been out sketching locally-here is a watercolor drawing of the Princeton University art museum (open six days a week, free):
And another from Grounds for Sculpture, in Hamilton, NJ. The man's head on the bench in the background is actually one of Seward Johnson's Sculptures-he had a special show there recently. GFS would be a great place the for group to sketch-lots of shapes plus lots of real people (though missing from this view).