The Wobble Wag Glow Ball interactive dog toy is 4.15 euros instead of 14.30 euros on AliExpress. The ball is designed to resist your dog's teeth, and has several notches to make it easier for your animal to grasp.
Note that the vinyl that makes up the ball is also guaranteed phthalate-free. The more your dog presses on the ball, chews it or shakes it, the more noise it makes, the encouraging you to continue playing.