I really like this wrapping paper and would like to see more wrapping paper that imitates other objects in this fashion.

I assume it'd be significantly more expensive than normal wrapping paper because it's suited to particular form factors of the presents, but as a business idea, I could see a larger service that matches these sorts of wrapping papers to products that would work with them.

The HN title filter that drops "This" at the start makes this into a different headline altogether:

    Wrapping Paper Turns All Your Presents into Bread

vs

    This Wrapping Paper Turns All Your Presents into Bread

This somehow feels quintessentially Japanese.

This is the simplest product I've ever seen that is actually vaporware. This product doesn't exist at all and they've simply digitally mocked-up some examples. It can't be purchased, and it's not being produced. Good job on that physical vaporware stuff!