Milk Caps are small, circular discs made from cardboard or plastic, originally used as bottle caps for milk containers. In the 1990s, they became popular as a children's game, where players would flip or spin them to score points. The game involved collecting and trading Milk Caps, which often featured colorful designs and images of popular characters. Players would compete to see who could flip their cap closest to a target or knock over opponents' caps. This simple yet engaging pastime fostered social interaction among children and became a nostalgic part of many childhoods.