Czech Glass Rosary
Nickel Silver Center & Cross
As you can well imagine - rosary making isn't exciting. Fifty nine eye-pins need to be linked together. Four butterfly knots need to be tied and have their rough ends trimmed and bent inwards so as not to snag a finger. Fourteen links of five-link chain segments need to be cut and attached. In all, nearly one hundred ten steps for one rosary... that doesn't include the dozens of times each decade is counted and recounted to make sure it has the required ten beads...
Rosary making - besides being the very definition of repetitive - is an activity that mostly silences the mind's incessant story-telling as muscle memory takes over to complete each discrete task. For sure, the chattering mind interrupts a lot at the beginning with things like "This is stupid.", "Can't this go faster?", "This is boring.", or spinning fantastical imaginings about where the rosaries will end up.. This noise settles down though, and simple motion repetition takes over. A type of silence descends for a time.
As for the efficacy of prayer - I don't think prayer "works" in a petitionary sense, otherwise things would be a great deal different in the world (not just for the better either, I'm afraid). However, holding a rosary and repeating the prayers can have a centering / grounding affect on the practitioner by crowding out obsessive discursive thinking. If only for that, I think rosaries of all types are a good idea.