Sixteenth Birthday Help Please? :)?

So my birthday is comming up in like 3ish weeks.. its my sixteenth so I kinda of want something fun! My mom has decided on a normal at home party with dinner and stuff.. but I lind of want to do something else on top of that.. It does NOT have to be expensive by any means actually the cheaper the better.. i was thinking about sskating but it wont work out.. any ideas?