Girly stuff crafts
At 13, I would do an all out pamper spa day for them. At home of course.. I think it would be fun to have them make their own lip gloss, lotion and then do nails for each other.
My niece at 14 had a soap and candle making party. It was awesome. Different and fun and the girls room the things they made home later.
This age is tough. A lot if them just want to be in their phones or computers. But I do know that no matter how cool my nieces were at this age, they were still little girls that loved to make stuff ;)