The purpose of creating a New Year's Eve flyer is to inform people about a special event or party happening on December 31st. The flyer should capture the attention of potential attendees and provide information regarding the time, location, dress code, and any other pertinent details. The flyer may also include images or graphics that represent the theme or atmosphere of the event. Overall, the goal is to create hype and excitement around the New Year's Eve party and encourage people to attend.