OK, multiple wish fulfillment here!
I wish that my two brain cells could ocassionally grasp a thought together.
Granted! However, the only thought you can grasp is the ecology of the dung beetle.
I wish I wasn't so tired
Granted! Your metabolism speeds up so that you never feel tired! Unfortunately, due to your increased metabolism, you have to eat constantly, and you die two days later of old age.
I wish I could cast magic; true, fantastic, Gandolf-style magic, not the stage illusions most people think of, and not the card game.