This is Kompoloi, nothing to do with prayer. It's a personal item that you carry with you and depending on the materials-way of playing with it shows some things for your character. Helps you when you are alone or you want to think calmly or to have your hands busy when you are waiting for the coffee to come although some idiots ''abuse'' it's use and have it for show-off. Kompoli is not for a bar or a restaurant, you don't play with it in front of your manager, inside a school or in a meeting or in a church.
Orthodox Christian Priests have no Kompoloi inside the church, the Monks on monasteries have this:
https://www.monastiriaka.gr/images/cach ... r--244.jpg
https://www.vimaorthodoxias.gr/wp-conte ... 061bea.jpg
which is cheap, made by rope each knot is a prayer and absolutely NOT for swirling.
My Kompoloi are custom and you can not find them in any store to buy it, are unique. Depending on the size-weight of the beads i choose the total number which is single (15-17-19) and NEVER double (18-20 etc).
The tassel (in the latest Kompoloi of mine) is made to match the colour of the beads and the length is determined from their size.I always have in mind the ''Balance'' which means when i swirling it the weight must be 50%-50% so the whole move is smooth,takes the same time and produces 2 kinds of sounds (bead with bead and tassel with bead).