Manicures and Pedicures
Who doesn’t like a mani/pedi? Have several colors picked out in advance for the girls to choose from.
Also, you can go to the dollar store to get files, clippers, buffers, and other manicure essentials to give them a more authentic experience.
The girls can give each other manicures and pedicures in all or one of the colors. Encourage them to have fun with designs, and not to worry about it being perfect. That’s why there is nail polish remover.