Ideas for a Sweet Sixteen Party?

My sweet sixteenth is this April coming up [yes, I like to plan early xD] and I'm really stuck for ideas. I don't mind boys and girls coming, but the party has to be low cost, because I don't know how much we have to spend. I'd really like a mive party, like a disco or something, but I'm not sure if that's conceivable. Anybody got any unique ideas for a sweet sixteen to remember? Any help appreciated :]