Toy Photography is a unstable medium how should it be interpreted. But to make it more of a definite meaning the subject must express depth. Mostly be taken outside the confines of your room.
Taken in the outdoors with unlimited imagination, that would really "exist" in our real world. Expressing in natural environment with minimal photo editing. Unless it was depicted showing its abilities or being in a one-shot action scene.
Artificial backgrounds or makeshift diorama is just a second option. The challenge is making the subject realistic in the great outdoors.