Natsumi Hayashi isn't the only levitation story around.
This is a story about Tibetan monks, using musical instruments, levitating a large stone into its proper place in a wall being constructed. I love the story but do not have any evidence to back it up, nor do I claim it is true... but wow.
This is a Hielscher Ultrasonic device suspending water droplets in mid air.
and this is a demonstration of acoustic levitation I'd turn the sound off... it gets annoying pretty fast.
and of course... there's always Oobleck