Maybe they (all girls) would like a home spa sleepover. The girls could really do up their finger and toenails. Not just one coat of whatever color, but take care of cuticles, put on a top coat, maybe do decorative designs. They could do up each other's hair in all kinds of wild ways. Fun scented lotions would be good. Oh, some kind of green goo facial mask would be fun. Cucumber for the eyes. And of course, loads of pictures of the whole process. They could take plain pillow cases and decorate them using fabric markers.