When you attune to this innocent looking red and yellow wood yo-yo you gain the following benefits.

It is impossible for adults 18 or over to be suspicious of you. You gain advantage on Persuasion and Deception checks against such people and they have disadvantage on Investigation checks against you.

The yo-yo has 5 charges and regains 1d4 +1 charges daily at dawn

You can expend 1 charge to make blades pop out of the yo-yo. You can make a thrown attack with it. It deals 1d6 piercing damage and comes back after dealing damage

You can expend 1 charge to make weighted steel ropes pop out of the yo-yo. You can make a thrown attack with it. If it hits, the target is grappled by you (Escape DC 15 Strength or Dexterity) You can reel them in by 5 ft by making a Strength check (DC 16)

You can expend 2 charges for the yo-yo to buzz with electricity. You can make a thrown attack with it. It deals 1d6 lighting damage and comes back after dealing damage

You can expend 2 charges for the yo-yo to sprout a grapple hook. You can make a thrown attack with it. It deals 1d4 piercing damage. If it hits a surface, you can use a bonus action to reel yourself towards it. The grapple line is 50 ft.

You can expend 3 charges to cast Minor Illusion

You can expend 4 charges to cast Invisibility

You can expend 5 charges to charm a adult. They have disadvantage on checks to break free.

Notes: child of 8 or lower, Social, Deception