HOPET Dog Outdoor Bungee Hanging Toy, Tether Tug of War Toys for Medium to Large Dog to Exercise, Durable Interactive Tug Toy, Dog Rope Toys

There's a whole genre of dog toy which is basically this. Dogs tend to love tug, and something suspended that they can grab onto but never pull down works really well for it. (I mean, clearly this dog should not be loose and doing that in a children's play area.)