Here a few ideas:<br>1.Destroy all weaponry of humanity. (espacially nuclear ones).<br>2.Jump start the human space faring era.<br>3.Immideatly end climate change by creating all energy that is needed.<br>4.While we're at enough energy, its creation and destruction: Create energy or destroy it as needed to prevent the end of the universe. (Or in other words make entropy a universal constant.)