The Christmas season represents more than just festive cheer; it’s a peak period for emotional expression and commercial activity. Holiday packaging, often overlooked, plays a critical role in enhancing the emotional and sensory experiences associated with gift-giving. This study investigates how emotional and interactive design elements in Christmas packaging influence consumer perceptions, emotional engagement, and purchase decisions, with a specific focus on Shanghai’s dynamic retail landscape. Drawing from theories of emotional design and interactive user experience, the research explores how elements such as color, typography, imagery, texture, and interactivity contribute to a multisensory holiday experience. Using a mixed-methods approach, the study combines in-depth interviews and thematic analysis to explore the emotional triggers behind consumer preferences, and employs quantitative survey data to statistically assess the impact of emotional and interactive design elements. The findings indicate that while emotional design components—like culturally resonant symbols, nostalgic imagery, and festive typography—enhance the holiday atmosphere, they are secondary to interactive features such as pop-up effects, QR codes, and augmented reality in shaping consumer judgments and driving impulse purchases. Interactive elements not only create surprise and engagement but also elevate the perceived value of the product, playing a decisive role in the consumer decision-making process. The research underscores the importance of integrating emotional resonance with technological interactivity to create memorable and culturally relevant packaging. For designers, marketers, and retail brands, the study offers a roadmap to designing packaging that builds emotional connections, enhances brand loyalty, and drives holiday sales. In a competitive marketplace like Shanghai, combining emotional storytelling with interactive experiences ensures that holiday packaging becomes a powerful tool of differentiation and consumer delight.