Does anybody know what's happening in 12 days?

Of course you don't- I'd be kinda freaked out if you did.
In 12 days, it shall be my birthday. Here's my problem- I don't have a clue what to do for it! I think my mum is willing to go through with pretty much any (reasonable) idea I put through. Yesterday I researched heavy metal paries (which look cool) and basement parties (which don't look so cool).
So, any ideas?