Small Sweet Sixteen.

Hey i need some help on deciding what to do for my sixteenth b-day party. I`m only inviting about 15 people and have a small space to hang out and a small budget to work with.
I`m not into dressing up to go with themes.
Some things im interested in that might make it more helpful.
I like- Music, movies, Disney princesses, & somthing simple yet not somthing everyone else does.
Help me with deco and other stuff plz. Maybe some sites to check out stuff. Please and thank you!.