Ideas for my 18th birthday?

Okay, so I'm turning 18 in the spring and...let's just say I like to plan ahead.

I'd like to do something big this year. Why? A) It's my first year as an adult (though I'm not sure if that's worth celebrating... B) My "Sweet 16" was just a bonfire with two of my closest friends...it was a great time, but I kind of wish I had a bigger party...

Anyway. I cannot (nor do I want to) do a strip club or lottery tickets or gamble, since I am the second oldest of my close friends.

If you'd like to know about me, to help with ideas:

- I'm a dancer (meaning I take ballet, jazz, tap and my employment is at a studio)

- Baking is fun for me

- I like the woods and the beach

- Dogs are cool

- I can't afford a petting zoo (dammit)

- I live in a small town but do enjoy city life

Sooo....any ideas?