Martenica (Мартеница) that looks just like the ones my Grandma used to crochet for us when we were kids. It's customary to wear these on your shirt or sweater until you see the first sign of spring. A pagan Bulgarian tradition that dates back thousands of years.
Bulgarians may wear the martenitsa (мартеница) – an adornment made of white and red yarn and worn on the wrist or pinned on the clothes – from 1 March until the end of the month. Alternatively, one can take off the martenitsa earlier if one sees a stork (considered a harbinger of spring). One can then tie the martenitsa to the blossoming branch of a tree. Family-members and friends in Bulgaria customarily exchange martenitsas, which they regard as symbols of health and longevity