Scene of graduate students decorating New Year's Eve party (indoor). Who has any new ideas? We don't need simple balloon flowers, we need specific implementation, thank you.

Lantern for ceiling, made of paper; Use colored bars and pink+purple balloons above the projection, and you can hang patterns at will. Use small transparent colored lights on both sides of the projection, one on the left and one on the right. If you have the skills of painting and writing, you can buy a large colored paper as a New Year theme wall, such as a greeting written in red paper or the theme of New Year's Day activities (it must be big), surrounded by clip art (fireworks, dragons ...), fixed on the back with cardboard, and hung on the wall with a string.