I was looking for an icon of St. Paraskevi, as she's commemorated on my birthday. when I went to this website, I found something called a "manti". here's a picture:
what is a "manti" for? it looks like it belongs in a gypsie's caravan, not an icon corner.
That is a "tama" of "matia".
A "tama" (plural: "tamata") is an ex-voto offering made to a Saint because of a vow and "matia" means "eyes".
There is a long tradition in Greek Orthodoxy that when we ask a Saint for healing, we promise to hang "tama" made of silver or gold and depicting an image of what the Saint healed on their Icon in the Church as a witness to the miracle. St. Parakevi is the Patron Saint of the those suffering eye ailments (because of her merciful act towards her tormentor, Antonius Pius, during her martyrdom).
Here is an Icon in a Church with a multitude of "tramata" bearing witness to the prayers answered by the Saint depicted: