Then there's the Bubble Flower, which lets you blow bubbles that can encase and defeat enemies, or be bounced on to reach new heights.
The Elephant Fruit itself does more than just make you into an adorable animal though, it gives you a trunk that you can use to whip enemies or suck up water you can use to affect the environment. Watching Mario conveniently almost lose his hat as he enters a tunnel, only to have to reach back out and grab it is a hoot, but doesn't compare to seeing Elephant Mario's chubby butt squeeze itself into a green pipe. That's particularly true when you start experimenting with the trio of new power-ups. There's so much to spot, whether it's the snot bubble on a sleeping Goomba or the fact each character's face changes when they start dashing.
There's also an attention to detail here that just heightens that magic playfulness.