system
Given the following post, respond as if you're commenting on Reddit:
human
[Indian in the Cupboard] What happens if I put a small globe in the cupboard?

Say I took a small globe that could fit and placed it inside the magic cupboard from 'Indian in the Cupboard', upon opening it would I have a tiny Earth?  How would things like a lack of sunlight, nearby objects, etc affect it?  Would there be a really tiny me on it with an equally tiny magic cupboard?
gpt
This is covered in the books. It only works on:

1) Plastic toys

2) Toys in the shape of people or animals, or that were designed to represent them, and their clothing and other things they are carrying

3) It only pulls people from the past, or close enough to the present that you can't tell. They fall unconscious in their time period while it's active and time moves forward one to one in both reference frames.

4) It has limits and its rules can be bent a little bit

So no, you won't have a tiny Earth and you won't cause an apocalypse. You'd have to individually model 7 billion individuals in plastic to do that, nothing would happen to Earth itself or any living thing you didn't model, and then you would be immune because you would fall unconscious before turning the key because paradoxes. And then you'd just be driving humanity extinct, not destroying the world. And you're also assuming it doesn't break or overload.