After sometime stressing over what I was going to do I finally have an idea. It’s a sad one though.
Snowman in snow globe sees a real snowman outside and becomes sad about his situation.
Camera starts on snowman very happy and content
He’s looking around at his surroundings in amazement
A (toy) train goes past
He watches the train go by, we then see the train go around him
The camera zooms out to show he is in a snow globe
Zoom back in, he’s still following the train which takes his gaze over to a window
He can see through the window next to him
There is a real snowman outside
He is sad and jealous of the snowman outside
Now just decide whether 3D or stop motion is the way forward.
Here’s a cute animation + inspiration for the design of the snowman