Design a playful and colorful scene featuring personalized Milk Boxes

Design a playful and colorful scene featuring personalized Milk Boxes (Caixas Milk) for a child's birthday party. Each Milk Box should be uniquely decorated with vibrant colors, patterns, and themed elements such as balloons, confetti, or characters related to the party theme. The boxes should look festive and appealing, with details like custom labels or tags that showcase the personalization. The background can include party decorations like streamers, banners, or a party table setup to emphasize the celebration vibe."