Rod of Gallia

Rod, very rare (requires attunement) Price: 15,000-35,000 gp | medium sentimentality

This ivory rod has wildflowers blooming out of the tip and the handle is gilded with gold. Once a day, with the rod in hand, you can use an action to drive it into the ground, causing joyful music with a catchy beat to erupt out of it for 1 minute. The music ends early if you pull the rod out of the ground.

Paid

For the duration of the rod’s music, all creatures within 120 feet of the rod, including yourself, must succeed a DC 15 Charisma saving throw or be compelled to drop what they’re holding, link hands in a circle, and dance. Creatures immune to being charmed automatically succeed their saving throw. When the music ends, all associated compulsions also end.

Overpaid

Once a day, if the Otto’s Irresistible Dance spell is on your class’ spell list, you can cast the Otto’s Irresistible Dance spell at 6th level without expending a spell slot.

Source: The Gray Merchant of Asphodel