Blind boxes are collectible items sold in sealed packaging, where the buyer cannot see the contents until they open it. These boxes often contain toys, figurines, or other merchandise, and they are popular among fans of franchises like Funko Pop! or LEGO. The surprise element adds excitement, as collectors may receive a rare item or a duplicate of something they already own. The concept of blind boxes encourages repeat purchases, as consumers may want to complete a set or find a specific item. This marketing strategy is commonly used in the toy industry, but it has also expanded to include trading cards and art prints, appealing to a wide range of collectors.