text: i need any ideas for a teen's birthday party! please answer!? my birthday is coming up in early december and i really need ideas. there won't be tons of people coming, maybe around twenty, mostly friends from school. i don't want it to be very expensive for decorations, no more than $80. i was thinking maybe a fifties party or something like that. any ideas or tips? you could do an 80s party because that'd be pretty sweet or a dinosaur party or something like that. something that'd have cool decorations and be retro.