Magic. That’s what this is:
Arthur C. Clarke said “Any sufficiently advanced technology is indistinguishable from magic.” And that little orange doohickey is magic.
It combines two newish technologies.
First, it uses 3-D printing.
Second, it uses software that learns how your brain waves correspond to what you’re thinking.
Combine those together, and the little orange doohickey was not created from a physical plan, but rather from the thought and mental imagery of a person.
Now think about magic in any fictional setting you like. The ne plus ultra of fictional magic is not illusion, or theurgy, or thaumaturgy, or alchemy, it is bringing something into existence from mere thought.