Yo-yo

The Yo-yo is the tool of the Ladybug Miraculous. The current owner of the yo-yo is Vivian ORourke-Miller, who uses it as the superhero Ladybug.

The yo-yo is red with five black dots resembling a ladybug. Vivian ORourke-Miller usually attaches it around her hips when she's not using it. The length of the string is unlimited, and can be controlled by willpower.

Abilities
The yo-yo is extremely versatile. Ladybug uses it as a weapon, both offensively and defensively, to hit enemies with it like a projectile or tie them up with its string. It works as a grappling hook, which Ladybug can swing from and use to travel far distances. When swung in a circle very quickly, it lights up pink and creates a shield able to deflect and withstand strong attacks. It can even create safety nets used to catch people from falling or even something as big as a police car and even a helicopter.

The yo-yo is useful for some of Ladybug's special abilities. Whenever something corrupts or infects an object or animal, like butterflies infected with the Butterfly Miraculous' energy to become akumas, the yo-yo can capture and purify them back to normal.

The yo-yo opens up, showing glowing pink energy, and it closes around the infected animal or object. It opens again with them healed or clean, such as akumas getting purified into ordinary butterflies again. The yo-yo can contain things larger than the yo-yo itself, and it can hold more than one object at once, from a stuffed animal to a huge swarm of akumas.

The yo-yo is also used for Lucky Charm: Ladybug throws the yo-yo in the air, and it releases a pink energy that produces an object that Ladybug uses to save the day. However, the Lucky Charm is also a Ladybug's weakness because as it is used in the middle of the summoning process she can't use the yo-yo to attack or defend until the process is finished. The power will be cancelled out if the process is interrupted.

One side of the yo-yo can slide open, revealing a screen. With this, Ladybug can use the yo-yo as a tracker, a map, a communicator to contact Cat Noir, or a cellular phone. Additionally, it can access the internet.

In and out of "Aqua Mode", the yo-yo can also work as a breathing apparatus for those who can't breathe underwater.