If you had the power to create anything you wanted what would it be?

I would create an unobtrusive system that can make "Savestates" Of an entire brain or mind. Basically being uploaded to the cloud as people say, but instead of aconsciousness being transferred from body to machine, its makes a backup that can be interacted with using Artificial intelligence.

The reasoning as to why I would do this is because you could make a digital clone of yourself (Your mind) and then install knowledge databases into the clone (like the matrix, installing kung-fu mastery)

Basically you could make a copy of yourself, Install knowledge (SUPER_SMART_GENIUS.EXE) and then BOOM you have a version of yourself who is a prodigy genius with the power of modern computing technology.

Also, because the super-smart-digital-cloneis a version of yourself, it understands how to arrange knowledge into terminology that you would understand
(AKA ateacher that perfectly understands how you learn, and how to adapt the lesson specifically so YOUcan understand it.)

And you could use Modern tech to create a super high res copy of your likeness (Like they do for movies and videogames) then you could have an actual avatar to interact with so the immersion works more seamlessly.

this would be amazing for preserving the intelligence of important figures for future generations to interact with. and also running simulations of brain defects that could lead to better understanding of the human mind.

There are many more use cases and reasons for this idea, but I think the info I provided so far gets the idea across well enough.