Vintage vinyl lunchboxes, especially those featuring popular characters or themes, can be valuable to collectors of nostalgic memorabilia. Look for lunchboxes in good condition with intact thermoses. These lunchboxes evoke a sense of childhood nostalgia. Collectors and enthusiasts appreciate their enhanced features as well. People appreciate them for their whimsical designs, with specific characters or themes often determining their collectible value. The condition of the graphics, hinges, and thermos can significantly impact the overall value of these lunchboxes, too.