Any one know any good toys for my guinea pig?

I've had my guinea pig for over a year now. She is the second guinea pig I've owned (the first being a male named Squeaky who wouldn't shut up) and she has, to me, a very strange personality. She never wants to come out of her cage for one thing (even if she screams for attention, she runs into her 'house' and I have to remove it from the cage before she is able to be taken out) and she never moves once put on a soft carpet floor (even if I put her favorite food, carrots, three feet away, she refuses to move for over an hour and a half). Maybe this is normal for female guinea pigs as I've only had a male before, but I fell sorry for her. Her cage has nothing in it besides a small shelter, a food bowl, and a water tank. Does anyone know what kind of small toy I can buy a guinea pig with this personality? Her name is Gini Pigg by the way (I am so imaginative when creating names, aren't I?).