<human>: Can you summarize the given text in a few sentences?

Ok, so I'm stuck. 

I'm turning 21 and I really want to do something unique to celebrate. Note: I live in Aus so I've been able to drink and vote since I was 18, so 21 isn't THAT big a deal (and I wholly recognise that) but I still want to do something fun because.. having fun is awesome?

Here are my main problems:

1) I HATE the idea of spending ludicrous amounts of money on something that is going to last like 6hrs or so. My parents have offered to pay but still... ew.

2) Generally, I consider myself to be a bit different and I like that. I find the idea of hiring a hall and doing the standard drinks, dinner and dancing a bit tiresome - unless it was in an awesome setting, and I could have a "Music of the 1900s" or "Sci-fi" theme (and force my b/f to go as Captain Jean-Luc Picard because he's just the most attractive thing in the universe). 

My friends are a little lame and have very few cool ideas, so I'm placing my trust in you fellow redditors. Go forth!
<bot>: ? What is/are your awesome idea/s for a unique, interesting, fun, preferrably cheap-ish 21st party?