Many Craft traditions use prayer beads.  These are commonly known as "Witch's Ladders."

A Witch's Ladder is used in spells when we want to focus our intent on a specific goal. Incantations, prayers, chants, and affirmations are repeated repeatedly, and the beads or knots on the Witch's Ladder track how many repetitions are made.

At Ariel's Corner, we use a type of Witch's Ladder called a Witch's Rosary. It is similar in many ways to a Catholic Rosary. I researched the beginnings of the Catholic Rosary and discovered its pre-Christian roots.
 

Having the correct bead configuration is essential for this operation. They should have five "decades" of beads.  A Decade consists simply of one Large bead followed by ten smaller beads. A Witch's rosary can be either a string of beads or a circle of beads.

We usually include some charm or tassel. This can be a symbol of the Goddess, a Celtic Knot, A Pentagram, or anything else you desire.

Each of the Large beads represents the God, or masculine principle.  Each of the small beads represents the Goddess or feminine principle.