I need ideas for my 21st birthday?

Okay my birthday is kind of far away but I'm bored and indecisive so I may as well start now. I've been thinking about ideas for a theme for my 21st birthday which is in January. (like I said very far away) I'm not into getting wasted or having a party where there is an excess of drinking, my friends probably wont drink more than a few gles anyway. What are some fun themes or ideas?