I have two children, one of each. My son enjoys playing with Lego Bionicles, and his sister sometimes likes to play with them too. These are robot/monster type toys that can be assembled and rebuilt to some degree.
One morning our son comes in our room and shows us that he has taken parts from two of the Bionicles and created a new one that has two dangerous weapons, poison and ice. He describes all the ways his new toy can fight enemies.
Then our daughter comes in with Gali Nuva, the blue Bionicle. She likes this one because it's her favorite color. She says Gali Nuva is going to put on a show and do gymnastics and singing and dancing, so everyone will sit and watch and enjoy the show.
I am thinking to myself that there is a huge difference between how girls and boys play with the same toy.
Then my daughter continues, "So when they're all watching really carefully, Gali Nuva can kill them."