While not pups, I keep a wide variety of toys on hand. Archie is the toy player, Mardi not so much. I pull out a few toys for a few days and then change off to others in reserve. I've gotten them puzzle balls and put some kibble in them. Surprisingly, Mardi can empty hers in no time flat. The new toy here is the Jolly egg. Archie is still getting the hang of it.