Milagros

Milagros (also known as an ex-voto or dijes) are religious folk charms that are traditionally used for healing purposes and as votive offerings in Mexico, the southern United States, other areas of Latin America, and parts of the Iberian peninsula. They are frequently attached to altars, shrines, and sacred objects found in places of worship, and they are often purchased in churches and cathedrals, or from street vendors.

Milagros come in a variety of shapes and dimensions and are fabricated from many different materials, depending on local customs. For example, they might be nearly flat or fully three dimensional; and they can be constructed from gold, silver, tin, lead, wood, bone, or wax. In Spanish, the word milagro literally means miracle or surprise.

(source: wiki and good ol'google searching...)