I think the beauty of having an open communication with your dog is that if you listen to what they're telling you...it helps you tweak the way you go about motivating them to "want" to buy into what you're trying to teach them.
Here's George my unmotivated toy guy...who has shown me that if I watch and listen to what he is trying to tell me...he's more than happy to teach me how I can use it to motivate him. Here's couple new games that he looks forward to playing with toys.
All I had to do is pair something he LOVES doing and finding a way to incorporate a TOY into the fun.
Out in the woods, is a great place to be creative as well with a Fuzzy stuffy pouch!