This odd contraption consists of two metallic disks connected to an axle with a ball-bearing. Tied to the axle is a long string that stretches to five feet when unraveled. Tying the other end of the string to user's finger allows them to unravel this string using gravity. When this happens, the string spins on the ball-bearing, propelling the yo-yo forward. Afterwards, physics returns the string to its original position and returns the Yo-Yo to the user's hand.

Common Attack. When the yo-yo is thrown, it deals 1d6 bludgeoning damage. You do not have disadvantage when attacking by throwing the yo-yo at a creature within 5 feet of you. After the yo-yo is thrown, you must make a Sleight of Hand skill check (DC 10) to make the string return the Yo-Yo to you. On a failed skill check, you must use an action to wind up the string before throwing the Yo-Yo again. If you are proficient with yo-yos specifically (proficiency in all simple weapons doesn't count), you automatically succeed this skill check.

Throw. The Yo-yo can be thrown dealing similar damage. If you are not proficient specifically with a Yo-Yo, you have DC 15 on your a slight of hand check and disadvantage on that check between 10/30ft. If you are proficient make the normal sleight of Hand skill check (DC 10) for over 10ft. Range is 10/30ft.

Around the World. In addition to your attack roll, roll a dexterity check (DC12) to attack multiple targets within 5 feet of you. Each enemy that your single attack roll succeeds against within 5ft receives 1D6 damage. On a failed check, the entire attack fails. 

 

Proficiency with a Yo-Yo allows you to add your proficiency bonus to the attack roll for any attack you make with it.

 

Notes: Damage: Bludgeoning, Finesse, Light, Thrown

The boomerang is a ranged weapon, and any creature proficient with the javelin is also proficient with this weapon.

On a miss, a boomerang returns to the thrower's hand.

Notes: Melee Weapon Attack: Bludgeoning, Range