Sweet 16 gift and game ideas?

I'm turning 16 and i'm throwing a big party. About 30 people are attending. It's gonna be in my backyard because it's really big. I'm hiring a dance floor. There's gonna be pizza, deli and seafood platters, a chocolate fountain, vodka jello shots, etc etc. Do you have any good ideas for games? I want about 2 games that the guests will enjoy playing.

And for the presents, my parents are giving my bedroom a whole new makeover. My brother is buying me a $90 Gryffindor Quittich jersey from this store called 'black milk' (since I'm a HUGE Harry Potter fan). What should my sister get me? Something no more expensive than $200. I was thinking maybe a brand new acoustic guitar? (Since I play guitar). But I don't know… I want to think of something really awesome. Something useful as well. Please don't suggest an iPad or iPhone, I don't want those.
Anyways, please give me some cool suggestions.

I think you should be yourself

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