One of the quickest and most fun ways for dogs to burn physical energy is through their prey drive!
You should definitely get one! Though there are many ways to use this type of toy, a Flirt Pole makes for an easy and on-the-go tool that your dog will love. It's typically a toy more closely related to cats, but dogs can have just as much prey drive, if not more. Just make sure that you're using it with your dog moderately, as it can be a very stimulating activity, and one that your dog can very easily get hooked on.
So keep it short and sweet, but fun!