The rosary would be 10 beads of wood or crystal. The first three beads would be a complementary color to the first three. They would be strung on 3 inches of elastic cording. At one end of the cord would be a round circle or heart. The other end would have a cross which would fit through the circle or cross.
It idea is to put this rosary around a steering wheel or walker enabling the driver or disabled person to move the rosary at the end of each decade and move the beads for each Hail Mary. The significance of the first three beads being different is that there are three Hail Marys said before the decades are started. The ten beads can be moved by the thumb, one at a time as each Hail Mary is said. When the ten Hail Marys are complete, the beads can be moved in the opposite direction for the next decade.
The rosary can be attached to a steering wheel and be moved with each decade. In my car, the three o'clock position would be the first decade, between 1 & 2 would be the second decade, noon would be the third decade, the fourth decade would be between 10 & 11 and the last decade would be at 9 o'clock. A disabled person could do the same with a walker. They would only need to determine the placement for each decade. This eliminates the need to carry the normal string of rosary beads, which is in excess of 50. There is no danger of dangling beads to get caught on turn signals or other parts of the car.