Worry beads or Komboloi as they're known in Greek are used to pass time in Greek and Cypriot culture. Unlike the similar prayer beads used in many religious traditions, worry beads have no religious or ceremonial purpose.
 
Worry beads have several uses in Greek culture, including:
relaxation, enjoyment, and generally passing the time
as an amulet, to guard against bad luck
used by people who wish to limit smoking