New York City is one of the most festive places to deck the halls with holiday spirit. A few things you might want to put on the list:

Go see The Nutcracker
Visit Pop-Up gift shops open for the holidays
Dine at Rolf's among the kitschy Christmas decor
Head uptown to the Annual Park Avenue Christmas Tree Lighting
Put on your skates and visit NYC's seasonal rinks 
Tour the cities famous holiday department store window displays