These ornamental shapes represent plants and fruits which grow in Mexico: corn, pineapple, grapes, palm tree and two types of cactus. Each decoration has a hole punched in the top through which string ribbon can be threaded so the ornaments can be hung up. 

Decorative tin ornaments and frames are a popular art form in Mexico. Tin has long been popular for its shiny surface, and it is also quite a cheap metal, hence its nickname, the "poor man's silver." Tin is soft so it is easy to work by stamping or embossing. The tin is hammered with a punch shaped into dots, crescents or other shapes. Folk artists in Mexico use tinplate as a surface for religious pictures, picture frames and ornaments.