I came up with this fun game for Comet the dog to play. It’s a fun way to entertain with a simple challenge. Perhaps not for all dog (or human) personalities, but training Comet took only a few times before he understood the game which occupies him for at least 15 minutes. Learn how to play the game in this 55 second video we made:

It’s pretty simple, but it will occupy your dog’s time and engage their mind for a good long while.
>Instructables