What are some fun activities to do in New York who is already a New Yorker?

This is a tough question because I am also a New Yorker and have done much of the tourist stuff as well. I know how you feel. However, there is so much to do in New York that one really shouldn't get bored. For example, we have plays on and off Broadway. Many of which you can get floor level seating for a steal if you buy the tickets the same day you are going to view the play. The trick is to go very early in the morning. Cooking classes are offered all over and often by top ranked chefs. Check out local restaurants as well as culinary schools. Dancing lessons. Check out your local dance studio or neighborhood community center. Many offer dance classes for a small fee or no charge at all. Now that summer is fast approaching Central Park will be buzzing with concerts and plays as well. Since you are up to traveling, check out Long Island (www.longisland.com). There are several fun events and activities i.e. Long Island Wine Tours. Everyone goes to the Hampton's but Long Island has so much more to offer. Live tapings. I've lived in New York for over 40 years and I've never once went to a live taping of any of the many shows that are recorded there. Moreover, there are tons of films made in New York as well. Be an extra in a movie just for the heck of it. Or create your own. Or if Jersey is as far as you want to escape from NYC, check out this website-http://www.nj.com/events/. They have great ideas as well. Hope this helps.