What is cupsleeve event?

A cupsleeve event is a fan-organized event where fans of a particular celebrity or fandom gather to celebrate through a unique and memorable experience. The event revolves around distributing custom-designed cupsleeves to attendees of a café or restaurant. Cupsleeves are cardboard or paper sleeves that slip onto a standard disposable coffee cup to protect your hand from the hot beverage inside. These cupsleeves are customized with artwork related to the celebrity or fandom for which the event is held. The event attendees can collect and keep these cupsleeves as a souvenir of the event. Cupsleeve events often include games, giveaways, and photo opportunities for fans to bond and interact with each other. These events are popular among K-pop fandoms, and the trend has spread in recent years to fandoms of other celebrities and franchises.