I'll bring back 1 year old item suggestion to this thread.
Launch Star
When appearing, they will float a little bit above the ground, while slightly tilted to the air. These are large enough for letting a player fit inside them.
A
Launch Star can be activated by pressing A near it, much like Warp Star. When used, the player will be spinned briefly inside it, and launch powerfully away to the air at high speed, much like in Galaxy.
These Launch Stars however, give a five-second time of fast-moving, unlimited flight which can be directed very freely. (Think like Sonic's Final Smash expect you can fly around in any diagonal direction as well)
When flying, your player glows and seems to emit stardust around him. He also leaves a glowing path similar to shooting star: this looks like the translucent, glowing paths from Galaxy.
You can press A for a
Star Spin which lets you deal decent damage and high knockback. Star Spin uses the quick starry energy seen from Galaxy when Mario used it, and technically is similar to Wing Ability's Gust Roll from Kirby Air Ride.
After five seconds the speed drops severely down and your character loses it's translucent, stardusty glow.This renders your character into helpless state. Be sure to find safe ground to descend on at this point or you'll plummet surely on your doom.
To prevent Launch Star's overpower, occasionally Launch Stars tend to break when you are just launching from them, making them crash on the ground comically. These broken Launch Stars then turn into
Sling Stars, which lets your character get slinged off spinning, which can also be used as an attack (albeit weak.). This is similar to Barrel Cannon.
A Sling Star stays on the screen for 8 seconds.