"Kalyviotis" is a very old chain of haberdasher's shops in Athens: buttons, lace, zippers, down to the obscurest items necessary for the fabrication or repair of clothes. During Carnival, their windows would sport even wilder stuff; in summertime, an unimaginable variety of elastic bonnets to protect ladies' hairdos from the seawater would appear; and so on.
Our grandmothers depended on it, our mothers less so, but even people of my generation would occasionally be saved by it. The changing times -and the crisis- meant that some of the shops have closed.
I was in there several years back, looking for a metal button for my leather jacket. They didn't exactly have the right type, nor do I wear that jacket anymore.