I haven't been to the Big Apple in many years, but here's a suggestion.
If you're interested in live music, get a copy of the Village Voice from your local library. It has hundreds of listings of artists playing in clubs - and I mean big names of whatever genre you love. Maybe you could pick up advance tickets.
Do you love art? THINK OF THE ART GALLERIES!!!!
Shopping for vintage clothes in the Village!!!!
Also, I went to Radio City Music Hall. Don't know if it still has shows, but that was one amazing experience that I will never forget.
One tour I was made to take but don't recommend - you got it. WT farm and the book factory in Brooklyn. Two days of seeing people living like monks and really depressed me. (not that you'd be considering that anyhow).
Have fun!
signed,
(still jealous but wishing one heck of a good time)
talesin