In the past, I have recommended The Greta Scrambler, an egg shaped hard plastic toy.
The company was purchased and the product re-introduced as the eGGe
but it is smaller, and thinner. While the dogs still love them, they are not worth the price, and if your dog is a knawer,
you will be disappointed when the small tip has a hole in it in less than a couple hours of play!
Just a heads up from an unsatisfied customer - New & Improved ain't necessarily either!
What a drag!