My friend had a great idea.  For her thirteenth birthday party she acted like she kiddnapped the guests(of course theparents of the guests knew). what she did was she gave us all invetations(not very many people)they said that the party would be on a date at her house, but what the party guests didnt know is that her mom called all of the guests and asked our parents if the night before the party she could come over at 12:00am to kidnap their chid. she told them that they couldn't tell their child or anything just to make sure they were in bed and sleeping by midnight.  when the day came  to be kidnapped,the host(birthday girl) and her mom went to the girls' houses to kidnap them. they needed to be quiet so they didn't wake the guests. they went to the guests room and video taped them they woke the guests up in a terrifying way as if they were being kidnapped. they got the whole thing on video tape. you would do this to all of the guests. on the way to the hosts' house we stopped in front of our school and did a chinese fire drill(where you all get out and run around the car then get back in)make sure no body is in front or behind you waiting in their car.after that we all went to the host's house and had cake and ice cream. we watched movies and did makeoversand ate junkfood. we also filmed all the stuff that we did. in the morning our parents pickedus up and we went home our parents knew when to pick us up because the host'smom told them on the phone before the party.  if you want to give out party favors you can make copies of the video you made and send it to the guests that were at your party. this will be a great memory of the fun you guys had.  i hope you liked my idea, it was the funnest birthday party i have ever been to.    if you want to change it up a bit the guests can also kidnap the birthday girl and scare her!