What are some good sweet 16 birthday party ideas?

my 16th bday is in less than 3 weeks and i have no ideas whatsoever! ive been invited to two sweet 16s recently and i dont want to copy their ideas. one was a hummer limo ride down to a really fancy bowling alley the other was they are renting a big place and having a dj come and its like a hollywood themed dance party thingy. we dont really have a lot of money to spend on my 16th, but i still wanna have a fun, special party. have any ideas? (about 15 ppl coming possibly)