What are some ideas for a sweet 16 gift for my best friend?

I've known her since 6th grade & i want to get her something really fun & cool for her 16th birthday. Every year I get her gifts that are memorable and mean something and this year I want to get her something different but still memorable. I need some ideas for a gift that gets her out of the house. I was thinking concert tickets but I can't find the right dates..maybe a trip to do something crazy and fun? She lives in VA and I live in MI. I'm driving there for her 16th party and staying for awhile. It could be something we could do together while I'm there. Any ideas?