I would go to a pawn shops and get a piece of jewelry with precious metals and diamonds. I would dramatically increase the size of these, and slowly sell them, enough to give me billions of dollars, but not fast enough ruin the market.

I would then use that money to build a completely automated factory building very large, but extremely powerful computers and phones. All the parts would be built and assembled completely without human interactions.

my second use of the ability would be to then shrink the entire facility to the point that all the finished products would end up being a consumer friendly size. Basically there would be giant processors that has thousands of times the number of transistors of current generation computes, but they would be shrunk down to a normal CPU size, alone with all the other components. This would also give the phone screens and monitors an outrageously high resolution and pixel density. Now I know a lot of you are thinking that physics would not allow this to work the way I i'm think of, but I already thought of how to get around that problem... I'm going to ignore it because this is all make believe anyways.

I would then start a company selling these things to become a Trillionaire.

I would then use this insane amount of money to build a second massive automated factory building more super device of just about anything I can think of. A newer generation of electronics, medical devices, batteries, Water and air purification systems, and anything else my team can think of. I would basically dominate the entire market in several categories. All of this would be reasonable priced so that everyone could afford an increased standard of living. The medical devices and anything else that would save lives, would of course be made available cheaply or freely depending on the needs of the people.

Even giving away or losing money on several things to help make the world A better place, I'm sure what I sell will make me the worlds first Quadrillionaire. Then with all that money... 2 chicks at the same time man.