Silverball Museum is by far one of the best pinball experiences in New Jersey let alone the country in my opinion and many others. You will not believe it when you walk through those doors. They are opening up another location nowadays so hopefully they still have a pretty big inventory (which I believe they do) since I went. Definitely don't miss it. The experience is just amazing.
It is also beachside.
If Morristown, NJ is on your way home, check out the "Morristown Game Vault", which my friend owns. Beautiful pinball selection there too and a GIANT arcade, one of the biggest around!