Rent a bouncy castle.

You can use balloons and ribbons.. Use good air freshner.. Serve the guests with pastries ^

I'm turning 16 on January 20th and I don't know what to do for it. I'm open to any ideas, but I'm on a budget so not like anything too expensive :p

But it will be for boys and girls, so nothing too girly. Also, there will only be about 10-15 people there so not anything too big.

Thanks for any help :)