Rupert loves getting his exercise. He jumps so high when he trying to get those feathers on that string. But I'm having a major problem extending the life of his toys. He knows that they're ok to play rough with, but he likes to play so rough they don't last long, and some of these things can be pretty expensive. Any suggestions on extending the life of his favorite prey toys? Also, I don't really know what is appropriate for Rupert. he doesn't even notice that the stuffed bear I got him exists, what are some toy ideas an adolescent (nuetered) male kitty might show interest in?