Boring Bungee Cord
An old boring, borderline useless, eighteen inch bungee cord from the garage?
Is it a dog leash? A pair of handcuffs? Foot cuffs?
Think of it as McGeyver training. I like to imagine her one day replacing a broken serpantine belt with a pair of panty hose, replacing a blown fuse with a soda can tab, and driving her and her friends to safety. This is where it starts.
A beauty of playing with something that is not already a toy is that is has no predetermined expectations of HOW to play with it.