His wishes for a helicopter and the ability to apply tattoos come true after he buys himself a helicopter and a tattoo book, while his wish to have a robot hand comes true when his self-inked helicopter tattoo becomes infected and leads to the amputation of his hand.
He gets what he wants: a helicopter and the ability to tattoo himself. However, his desire for a robotic hand comes true after his self-tattooed helicopter design becomes infected, leading to its removal.