13th Birthday Party Ideas!! HELP ME ASAP!!!

HEY!!! My 13th birthday is coming up soon and i wanted to invite some girls over(5 or 6) and have a sleepover. I wanted to go do something during the day before they come to sleep over. Do you have any ideas?? I live in Colorado so i cant do any major things. I have a 500$ budget. ANY IDEAS??? PLEASE PLEASE PLEASE HELP ME OUT GUYS!!! LUV YA!!!!
-akaysha
Posted by akaysha; updated 04/03/08